Question

Page 1: Question 1 (1 point) 1 2 3 Which one electron configuration corresponds to an excited state of a neutral halogen atom (Group 17 or 7A)? 4 5 6 INel3s24s2 8 7 INel3s13p O(Ar14s23d24p4 10 Arl3d5 (Kr15s24d105ps un co

Answer 1

[Ne] 3s² 4s² => here after 3s the 3p orbital will come so not valid

[Ne] 3s¹3p⁶ => 17 electrons are present , here the general halogen configuration is ns² np⁵ and on excitation it goes to the ns¹ np⁶ => answer

[Ar] 4s² 3d² 4p⁴ => here the 3d orbital is not full filled and it is not valid

[Ar] 3d⁵ => here the after argon 4s will come and nt shown so not valid

[Kr] 5s² 4d¹⁰ 5p⁵ => this is iodine ground state electronic configuration

answer => [Ne] 3s¹3p⁶