Solution:
(Cs35) = 1s2,2s2,2p6,3s2 , 3p6,3d10,4s2 , 4p6,4d10,5s2,5p6,6s1
Cs+ = 1s2,2s2,2p6 , 3s2,3p6,3s10,4s2 , 4p6,4d10,5s2,5p6
Total no. of e− in s- orbitals = 10
Total no. of e− in p-orbitals = 24
Total no. of e− in d-orbitals = 20.
© examsnet.com