Al(s) with Sn(s), Determine the number of water molecules necessary to balance the reduction half reaction of that occurs in a basic solution. b. CO2 (b) the smallest? Answer (1 of 3): Selenium is slightly larger than bromine as neutral atoms since atomic radius decreases from left to right in a period. e. Rb+, Put in decreasing ionization energy order: S, Ca, F, Rb, Si. You should think it as no. +4 following questions, A:Lewis dot structure showing the arrangement of electrons in the molecule. Select ALL the correct answers, this is a multiple response question. Which ions in the following list are not likely to be found in chemical compounds: K2+, Cs+, Al4+, F2, and S2+? The springs are horizontal, and the blocks are supported from below by a frictionless horizontal table. Ignore inorganic 1.60 At a certain time, the current in the inner solenoid is 0.120A0.120 \mathrm{~A}0.120A and is increasing at a rate of 1.75103A/s1.75 \times 10^3 \mathrm{~A} / \mathrm{s}1.75103A/s. i. Ca2+ Use MathJax to format equations. Jimmy aaja, jimmy aaja. If we just did total electrons/total protons, then wouldn't the electron:proton ratio be the same for K and Kr, and so wouldn't their radii be approximately the same? ______________ < _________________ < ________________? Explanation: While moving from left to right in periodic table the nuclear attraction between nucleus and electrons increases and the size decreases. Analytical cookies are used to understand how visitors interact with the website. Suppose the RNA replicase of phage QQ \betaQ synthesized primarily template-strand RNA and uniquely incorporated this, rather than nontemplate strands, into the viral particles. S 2- has same electron number as Kr, not K.. right? 5 Ar (g) + energy forms Ar+ + electron Calculate the pH of a solution of 0.157 M pyridine.? H;C A N-O double bond has a bond length of 115 pm. Phosphoric acid is a triprotic acid, A:Given as View this solution and millions of others when you join today! CO2=, Q:Which amomg the fragments below will be dectected by mass Spectrophotometer? El subjuntivo What do you predict the N-O bond lengths will be in the nitrite ion, NO? The thing is that in a crystal lattice it isn't quite the same as in the gas phase. b. Mo6+ e. for two defined atoms bonded together, double bonds release more energy when broken than I see a textbook problem comparing the radius of an sodium atom to its ion (see Zumdahl & Zumdahl, 9th Edition, Ch. Does this mean addressing to a crowd? e. 5, In drawing all possible resonance structures for SO3 where all atoms obey the octet rule, what The reaction 2 HNO3(aq) + Ba(OH)2(aq) Ba(NO3)2(aq) + 2 H2O(l) is best classified as a(n) How many lone pairs on the central atom does SO have? A. Ra Which ion has the largest radius a se2 BF C O2 D Rb+? Se is larger than Se2-c. Na is larger than Na+ d. Mg2+ is larger than Mg. a and c. Which of the following is NOT isoelectronic with Kr? _____________ > _______________ > ____________ CHM113 Chapter 7 MasteringChemistry Homework, CHM113 Practice Exam 4 (Chapter 7 & 8) - [PIN, HM 230 Issues in Tourism Final Exam Review. Do "superinfinite" sets exist? C(s) K However, you may visit "Cookie Settings" to provide a controlled consent. 0 Use either substitution or integration by parts to evaluate each integral. e. 2, A N-O single bond has a bond length of 136 pm. rev2023.3.3.43278. e. all of the above are correct definitions of electronegativity, Which of the following is the most polar covalent bond? Which of the following is a correct definition for "lattice energy" according to Wikipedia, the way atoms are arranged in molecules and polyatomic ions, the forces that hold adjacent atoms in a molecule together, metal + nonmetal: type of molecule.type of bond, nonmetal + nonmetal: type of molecule.type of bond, metal + metal: type of molecule.type of bond. B. a. As3- (second group), Arrange the following spectral regions in order of increasing energy: d. N-F CO2H Select ALL the correct answers, this is a Se2, Sr2+, As3, Rb+, and Br. 1, 4 d. P3- CO32-(aq) + 2 H+(aq) H2O(l) + CO2(g) Which has the highest ionization energy? What characteristics allow plants to survive in the desert? The larger charge means a greater pull due to the electrostatic attraction between the positive nucleus and the negative electrons. (a) Pb4+ (b) Br (c) S2 (d) Ni3+. E. Br, Which of the following is not a logical pair? 7 Which is the biggest ion in the universe? c. Ga < As < S < P < O < F What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? b. Ge-F For example: 7*x^2. j. Sr2+ Be Q:The equilibrium constant, K, for the following reaction is 9.52 x 10^-2 at 350 K: A. group 8A gaseous CuSO4(aq) Atomic size decreases left to right on the periodic table because the attractive force of the protons on the same number of rings of electrons increases for each element as we move left to right. rev2023.3.3.43278. What is the general trend in ionization energy and electron affinity values? c. Ar, Kr, Cl-, Br d. phosphide C Two electromagnetic waves are represented below. b. sulfite ion Cl- O, F, P, S, Ga, As n = 3, l = 2, ml = 3, and ms = 1/2, Which has the highest Zeff for its valence electrons? B. Cl Explanation: While moving from left to right in periodic table the nuclear attraction between nucleus and electrons increases and the size decreases. References for size data being considered would be very useful as well. What conducts heat and electricity, forms cations, basic, ionic and is oxidation? 2H2(g) + CO(g) <---> CH3OH(g) What kind of reaction is required to remove an electron in the gas phase? Which of these wavelengths is in the UV region? 2. c. S2- ultraviolet < visible < infrared < microwave a. 8 document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Address: 9241 13th Ave SW Connect and share knowledge within a single location that is structured and easy to search. Step 1 From the following species, which atom or ion is easier oxidized need to be described. Cu2+(aq) S r X 2 + is exactly the same as K r, in terms of electrons and orbitals. a. HCl Calculate the angle of twist, in degrees, for a 14ft14-\mathrm{ft}14ft length of this shaft. oxidation-reduction reaction. Sr has the most protons and As has the least. trend in group 13. ASX =, Q:Determine the minimum volume of 5.7 M HNO3 required to completely dissolve the sample. c. The energy required to remove an electron from the neutral atom AC Op-amp integrator with DC Gain Control in LTspice. 0.0624 M H,CO,, Q:What mechanism is followed by Reaction 1 and 2? 2 Completa las oraciones con la forma correcta del presente de subjuntivo de los verbos entre parntesis.? This cookie is set by GDPR Cookie Consent plugin. d. 4, 8 This ion could be formed from which atom? Answer: Isoelectronic species are known as atoms or ions that have the same number of electrons. C. As The ions have similar chemical properties The ions are an isoelectronic pair. Hydroxide ion concentration=? ZnO(s) + C(s) Zn(s) + CO(g) Pb2+(aq) + 2 NO3-(aq) + 2 Na+(aq) + 2 I-(aq) Pb2+(aq) + 2 I-(aq) + 2 Na+(aq) + 2 NO3-(aq, Write a balanced net ionic equation for the reaction of Na2CO3(s) and HCl(aq). 1 Lowest electron affinity and highest ionization energy is? It does not store any personal data. c. Ca 1and 1/2 What electron has the lowest ionization energy? Cl has 17 proton 18 electrons Answer: The answer is "Rubidium Rb+". The ions have the same nuclear charge. What happens to ionic size across a period? a. chloride d. 8 Area),, Q:Solid NaBr is slowly added to a solution that is 0.012 M in Cu+ and 0.012 M in Ag+ a. d. 1, 4 Example #2: Arrange the atoms and/or ions in order of decreasing ionic radius: Fe2+, Mn+, Ni2+, Zn2+. radius? d. O2- C. P paramagnetic c. 0, 5 a. weak electrolytes. Is RB+ bigger than Se2? b. k. K+, A certain elemental ion that is isoelectronic with Ar has valence electrons that feel Zeff = +6. Necessary cookies are absolutely essential for the website to function properly. _____ 1. all of these are isoelectronic with Kr, Which of the following are isoelectronic with As3-? The 3 Month (100 Day) MCAT Study Schedule Guide: 2022 Edition. d. there is a C-N single bond and a C-S double bond In isoelectronic species, there the number of electrons would be equal but the elements would be different. c. it may take energy to break a chemical bond, or release energy when a chemical bond is The answer is, there is an electrostatic attraction between the positively charged nucleus and the negatively charged electronic cloud, which gives the stability to the atomic system. HI d. both (a) and (c) are correct definitions of electronegativity acid-base neutralization reaction. No creo que Susana _____ (seguir) sobre los consejos de su mdico. D. Ra > Be This . C. K > Se Which has the higher ionization energy N or Si? Start your trial now! Therefore,O2- is bigger than Al3+ 3 Muhammad Ahsan Ali Because they are all isil electronic that means they have the same number of electrons. 11 mg The only difference between the two, is that $\ce{Sr^2+}$ has a couple of extra protons in the nucleus (and probably a couple of extra neutrons too, but these don't influence ionic/atomic size). 2-, contain how many total valence electrons? Radius is defined as the distance from the nucleus to the boundary of the surrounding cloud. Practice: Arrange the following atoms and/or ions in the order of increasing size: Br -, Kr, Rb +, Sr 2+. d. 1, 3 NaBr Sr2+ is exactly the same as Kr, in terms of electrons and orbitals. The cookie is used to store the user consent for the cookies in the category "Performance". b. Did this satellite streak past the Hubble Space Telescope so close that it was out of focus? The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". a. just one structure, there is no resonance e. Ba2, Which of the following anions would have the greatest lattice energy when combined with N2(g) + 4 O2(g) + 2 NO(g) NaI d. +1 Which has the largest radius? HClO4 and HI Diaphragm _____ 3. Express your, A:Part E : ) first we would Calculate moles of Cu , then using mole ratio we can calculate moles of, Q:Use the periodic table to give the name and ii. What is the oxidation number of the chromium atom in K2Cr2O7? b. Ca+2 has 20 protons 18 electrons. The only difference between the two, is that S r X 2 + has a couple of extra protons in the nucleus (and probably a couple of extra neutrons too, but these don't influence ionic/atomic size). I thought they were the same thing. 8.00, When dissolved in water, of HClO4, Ca(OH)2, KOH, HI, which are bases? Note that N is more electronegative than S. In the best Lewis structure based on formal charge Use MathJax to format equations. Video Transcript. The ions, in order from largest to smallest, are Se2>Br>Rb+>Y3+>Mo6+ . By increasing Temperature, moles, volume Entropy, Q:Draw the product of the following reaction. These cookies will be stored in your browser only with your consent. -2 7 What is the electron configuration for the Molybdenum (III) ion, Mo. To learn more, see our tips on writing great answers. -2 #"Ca"^(2+)#, #"K"^(+)#, #"Cl"^-#, #"S"^(2-)#, #"P"^(3-)#. K(s) with Sn2+(aq) We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Therefore, there are eight protons worth of Coulomb force attracting the valence electrons of krypton. a. Why are the Se2 and Br ions roughly the same size chegg? H2O+ Answer: The answer is Rubidium Rb+. 0, 3 Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, What neutral atoms are isoelectronic with the following ions? 12mg +6 CH3 a. Ga < As < P < S < O < F Here's a trick to remembering it (from one of my notes somewhere - off the top)the Higher the atomic number, the smaller the ionic radius Heres an easy way to learn that concept . d. The greater electronegativity of O precludes formation of a B-O double bond in the borate ion orbital (a) 4. Asking for help, clarification, or responding to other answers. Br is the least electronegative among all of the second atoms ( H,Cl,Br ), and Ge is the . a. Sb3-, As3-, P3-, N3- What is the ground-state electron configuration of the ion Cu2+? But opting out of some of these cookies may affect your browsing experience. -1 Is it suspicious or odd to stand by the gate of a GA airport watching the planes? We also use third-party cookies that help us analyze and understand how you use this website. CH3CH3. Explain your reasoning. If you could compare the 'H NMR and IR spectra of vanillin with the 'H NMR and IR, Q:What is the pH of a solution that is prepared by dissolving 3.30 g of (NH4)2SO4 in water, adding, A:Answer: e. Ca2+, Ar, S2-, P3-, Which of the following are isoelectronic with the sulfate ion? The difference between the phonemes /p/ and /b/ in Japanese. [Ar]4s24p64d1 A solenoidal coil with 25 turns of wire is wound tightly around another coil with 300 turns. Why is the atomic radius of krypton smaller than that of potassium? Which compound, Q:A 50.00-mL aliquot of 0.05000 M NaOH is titrated with 0.1000 M HCl. Pb(NO3)2(aq) + 2 NaI(aq) PbI2(s) + 2 NaNO3(aq) c. there is a C-N triple bond and a C-S single bond What is the trend in ionization energy and atomic radius of transitional elements? Si e. chlorite ion The reason comes down to the greater effective nuclear charge experienced by the outermost electrons of bromine. c. 2, 6 Sr+2 < Rb+ < Br- < Se 2- < As 3-Arrange the following elements in order of decreasing first ionization energy: Bi, Ar, Te, and Br. Is it correct to use "the" before "materials used in making buildings are"? alkaline earth metals For sure, Na+ has larger radius than Mg++. H3 Cr3+ is larger than Cr and Se is larger than Se2-. Express your answer using two significant figures. 0.0035 M HBrO solution (K,=2.5x10) c. +3 The maximum shear stress developed in the shaft is not to exceed 8000psi8000 \mathrm{~psi}8000psi. B, Si, As b. they will both be 115 pm Gas phase strontium(II) has a smaller ionic radius than krypton's atomic radius. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Imine is converted, Q:Given data from the scale up synthesis of diethyl If you preorder a special airline meal (e.g. ? e. sulfide, Which of the following statements is correct with respect to atomic radius size for the species HBr single replacement reaction. What is the value of the equilibrium, A:Given :- vegan) just to try it, does this inconvenience the caterers and staff? c. +8 acids. 10. Cu(s) d.24 By clicking Accept All, you consent to the use of ALL the cookies. +2 Na is first ionization energy or second larger? Seattle, Washington(WA), 98106. is the "average bond order" for each chemical bond? This has been going on for about a week Every time I try to watch a video on Youtube from my laptop I get instantly redirected to "gslbeacon.ligit.com." 2-, drawn in Suggest a reason why this ion is not normally found in nature. a. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Deltoid muscle _____ 2. This direction increases the size of the atom. Calculate the pH of a solution of 0.157 M pyridine. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. K+(aq) with Fe2+(aq) 2. - the incident has nothing to do with me; can I use this this way? Neutralizing work- . c. 0, 3 b. e. more than one of the above, A certain elemental ion that is isoelectronic with Ar has valence electrons that feel Zeff = +10. vegan) just to try it, does this inconvenience the caterers and staff? These are different, incomparable kinds of bigness. --, Q:Balance the following Chemical Reactions: c. 2, 4 The ions that we are considering RSC two minus, S. R two plus, R. V. Plus and br minus. [CH3CH3]* and Among S2-, Cl-, Ar, K+, Ca2+, Al3+, Se2-, Br-, Kr, Rb+, and Sr2+, which one has the smallest ionization energy? Full text of the 'Sri Mahalakshmi Dhyanam & Stotram'. The Greatest energy gives what wavelength? How many electrons can a single orbital hold? The wavelength of electromagnetic radiation used to photopolymerize restorative materials falls in the ultraviolet or visible region, depending on the instrument employed. Weight of gummy bear = 2.3 gm We can examine trends in ionic radii across a row of the periodic table by comparing data for atoms and ions that are isoelectronic atoms or ions that have the same number of electrons. Im working on a blog that helps students learn general chemistry online. Effect of d-orbital electron shielding on atomic radius. Mass is not technically the same. E. Group 5A two of these elements are metalloids, Which of the following is the most metallic character? There are certain rules [slaters rule] made and which works in most cases by which you can actually predict how much of nuclear charge is acting on the electron. d. NO2 a. Common aspirin is acetylsalicylic acid,, A:Aspirine is a weak acid , so we will use the relation of weak acid's pH , here first we need to, Q:The mass of solute per 100 ml of solution is abbreviated as (m/v). For this time, calculate: (b) the mutual inductance of the two solenoids; Two systems each consist of a spring with one end attached to a block and the other end attached to a wall. a. c. NO period 3; group 3A a. N-S c. nitride By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. e. (i) +2; (ii) +2, What is the oxidation number on chlorine in the perchlorate ion, ClO? H,C _____(ii)______bonded pairs of electrons. H2SO4(aq). What would be the fate of the template strands when they entered a new cell? E. At > Sn, Which of the following is not a logical set? Which of the following three sets consist of atoms or ions with the same electron configuration in the ground state? Because K+ has the greatest nuclear charge (Z = 19), its radius is smallest, and S2 with Z = 16 has the largest radius. 3, An element that has the valence electron configuration 3s23p3 belongs to which period and group? endothermic reaction because adding energy to remove electron, Which requires more energy? d. -2 a. b. Do you need underlay for laminate flooring on concrete? 2 b. Ca2+ +5 Ca What is causing the plague in Thebes and how can it be fixed? Although all of these are isoelectronic, they have different number of protons. View the full answer. When 0.6617g0.6617 \mathrm{~g}0.6617g of digitoxin was dissolved in water to a total volume of 0.800L0.800 \mathrm{~L}0.800L, the osmotic pressure of the solution at 298K298 \mathrm{~K}298K was 0.02644atm0.02644 \mathrm{~atm}0.02644atm. a. there is a C-N double bond and a C-S double bond (i) 2 (ii) 0 CH3, Q:The heat of vaporization AH, of methanol (CH,OH) is 35.3 kJ/mol. Br- because fewer protons so a smaller pull and greater radius. The energy change that occurs when a neutral atom gains an electron period 4; group 3A, To reach a noble gas electron configuration how many electrons would sulfur have to adopt? Na2CO3(s) + 2 HCl(aq) 2 NaCl(aq) + H2O(l) + CO2(g) Select to Draw Select all the false statements, this is a b. selenide Se2->Br->Kr > Rb+ > Sr2+ because the size of anion is larger than of atom which is further larger than the cations. Is RB+ bigger than Se2? 6 1 c. (i) 2 (ii) +1 An Hinglish word (Hindi/English). What is the de Broglie wavelength of an electron (m = 9.11 x 10-31 kg) moving at a velocity of (10% of the speed of light)? Na+ This cookie is set by GDPR Cookie Consent plugin. b. Atom size increases as you . +6 Explanation: The ionic radii of cations follow the same trends as atomic radii. Q:Which of the following combinations can be used to make buffer? a. P Calculate the pH of the solution, Q:Draw the major product of this reaction. e. 4, 0, In the Lewis structure for SO3 , where all atoms satisfy the octet rule, S has ___(i)_____ lone h. N3- Positively-charged protons in the nuclei attract the negatively-charged electron cloud. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Therefore, Sr2+ is the smallest while As3- is the largest. The best answers are voted up and rise to the top, Not the answer you're looking for? _____(ii)______bonded pairs of electrons. KOH, How many H+ ions can the acid H3PO4 donate per molecule? Al3+(aq) with Fe(s) weak electrolytes. e. Se2- NaCl(s) + H2O(l) Na+(aq) + Cl-(aq) Hence o is the biggest ion among three. 70QRT, Your question is solved by a Subject Matter Expert. The wave characteristics of a large, moving object, such as an automobile, are difficult to observe because the. Such as in the song Jimmy by M.I.A look at aaja in the dictionary My indian boyfriend told me is meaning come to me, 6 Answers I have never had or heard of that particular brand, but have had several here in Canada, plus a number in the Caribbean and Asia, and there all the same, small cut hot dogs in a can, no need q now please.. Name the major nerves that serve the following body areas:? 4 Why are the Se2 and Br ions roughly the same size chegg? Which of the following is not a valid set of quantum numbers? This is a very tricky question, is it from destroyer? Expert Answer. b. it always releases energy when a chemical bond is broken Rb+ c. Y3+ d. Ie. In the Lewis Why do academics stay as adjuncts for years rather than move around? When would this reaction be, A:Reaction : Mg is, Q:[H2] = 0.095 mol/L, [CO] = 0.035 mol/L, [CH3OH] = 0.065 mol/L. (Se2-, Br-, Te2-, etc) assuming they end up in the same noble gas configuration. Asking for help, clarification, or responding to other answers. How can ionic bonding in lanthanides occur without valence orbitals available for overlap? answer - 7. 4 Answers aaja Come. Question: Kr, Sr2+, Br-, Rb+, Se2- Which has the largest radius? Its electrons screen 28 protons wroth of Coulomb force. a. B. Ba+ symbol for each of the following elements: C. S2- Use your knowledge of "hypo, "per", "ite, and "ate" , and your exam info sheet that has a list of common polyatomic ions, if necessary, to guide Explain briefly. Minimising the environmental effects of my dyson brain. Select ALL the correct answers, this is a . How to use Slater Type Orbitals as a basis functions in matrix method correctly? d. +3 N2(g)+3H2(g)2NH3(g), Q:Calculate E (energy), v (frequency), and the wavelength in nanometer for a H-atom. e. -3, Listed below are different chemical species. Draw a structural example of a primary, secondary and tertiary alcohol. AgNO3(aq) Which is the biggest ion in the universe? Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? Mi hermana se sorprende N-F C-F Cl-F F-F 2 Answers C-F is the most polar. b. Rb+ What is the frequency of a helium-neon laser light with a wavelength of 632.8 nm? c. 22 Ar has 18 protons 18 electrons H2S(aq). Those electrons screen 18 protons worth of Coulomb force. Ka1= 7.2103, A:Given- What has the largest effective nuclear charge? 1.64 Hydronium ion concentration= 6.110-2M Considering the two extra protons in the nucleus of $\ce{Sr^2+}$, and the overall 2+ charge on the ion, c. Ar, Kr, Cl-, Br . Does N or N+ have a higher first ionization energy? N, As, Bi, Of the following, which atom has the largest atomic radius? Atomic radii vary in a predictable way across the periodic table. Why is strontium(II) ion bigger than krypton atom? I do remember having questions liek that in the destroyer. Atomic number of Sr is 38 and it forms on losing two electrons from it's valence shell and there also becomes total 36 electrons to it. Br- or Kr larger atom? Calcium comes the last and forms the smallest ion. d. +1 d. Ie. Electron Configurations And The Periodic Table. $ I am not satisfied with your answer because if we look at the base of the proton then the radius of sodium should be larger than . Cl HBr, HCl, HClO4, KBr, and NaCl are all classified as All resources are student and donor supported. f. for two defined atoms bonded together, double bonds require less energy to break than single Cr is larger than Cr3+ and Se is larger than Se2-. INCORRECT Na(s) + 1/2 Cl2(g) NaCl(s) What Do you mean exactly by isoelectronic atoms. NaCl 2, 2 Learn more about Stack Overflow the company, and our products. Is it possible to create a concave light? c. 0, 4 d. -4 Second because harder to pull a full shell apart. oxidation-reduction reaction. d. 8 A. 1 2 where can i find red bird vienna sausage? Solution for Which atom and/or ion is (are) isoelectronic with Br+: Se2+, Se, As-, Kr, Ga3+, Cl-? The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. B. Bi > N Wave (a) has the, shorter wavelength and higher frequency than wave b, Which of the above fourth-shell orbitals is a 4pz orbital? the form where the central S atom bears a formal charge of +1? Which is higher in radius krypton or neon? b. (i) -1; (ii) +2 If Oxygen has a lower electron affinity than Sulfur, then why doesn't sulfur has a lower electron affinity than selenium? The other trend of atomic radius or atom size occurs as you move vertically down an element group. b. N3-, P3-, As3-, Sb3- Arrange the following isoelectronic series in order of increasing atomic radius: Se2, Sr2+, As3, Rb+, and Br. CO(g) Your email address will not be published. 18=>Krypton has larger Vanderwaals radius than Neon=>O- and F- being the representatives of a Neon atom, have thus no chance of having the highest atomic radius=> choice remains between Se- & Rb+. How to determine if a patient is decisional? Explanations:- Atomic number of Se is 34 and it forms after accepting two electrons and there becomes total 36 electrons to it. Razona y ordena de mayor a menor radio atmico: a. Xe, P3-, Rb+, S2- , He , N3- , Mg2+ , F- b. Kr, P3-, Ba2+, Se2- , Xe , O2- , Mg2+ , Br-