The total number of electrons present in all the s-orbitals, all the  p-orbitals and all the d-orbitals of cesium ion are respectively

Cs55=1s22s22p63s23p63d104s2                            4p64d105s25p66s1Cs+=1s22s22p63s23p63d104s2.                      4p64d105s25p6Total no. of e -  ins - orbitals  = 10 Total no. of e- in p - ortbitals  = 24 Total no. of e- in d - ortbitals  = 20.