Calculate the effective nuclear charge of the last electron in an atom whose configuration is1s^(2)2s^(2)2p^(6)3s^(2)3p^(5)

Calculate the effective nuclear charge of the last electron in an atom

1.	Calculate the effective nuclear charge of the last electron in an atom whose configuration is1s^(2)2s^(2)2p^(6)3s^(2)3p^(5)
Answer» Solution :Given:Z=17 `Z^()=Z-S` `=17-[(0.35xx"No"`.Of other electrons in `n^(TH)"SHELL")++(0.85xx"No"`.Of electrons in `(n-1)^(th)"shell")+(1.00xx"TOTAL number of electrons in the inner shells")]` `=17-[(0.35xx6)+(0.85xx8)+(1xx2)]` `=17-10.9=6.1` `Z^()=6.1`.