Question

The effective nuclear charge experienced by the d1 electron in the given electronic configuration (1s)2 (2s,2p)8 (3s,3p)8 (3d)1 (4s)2 is-

Answer 1

Answer:

(1s)2 (2s,2p)8 (3s,3p)8 (3d)10(4s, 4p)8 (4d)10(5s,5p)2-1=1.

hope it helps u

Answer 2

The effective nuclear charge is 3.00

Explanation:

• The slater's rule states that the effective nuclear charge can be calculated by subtracting the value of σ from atomic number(Z).
• σ is the screening constant.
• For d and f-subshell electrons, the number of electrons in their subshell is multiplied by 0.35 and the rest by 1.
• Then it is subtracted from the atomic number to obtain effective nuclear charge.
• In the given atom, the σ will be:

        (2 x 1.0)+(8 x 1.0)+(8 x 1.0)+(0 x 0.35)

        =18

• Therefore, $Z_{eff}=Z-\sigma = 21-18 =3$