Question

screening constant Sigma and Zeff for 3D electron in MN respectively ​

Answer 1

Explanation:

Step 1: Write the electron configuration of the atom in the following form:

(1s) (2s, 2p) (3s, 3p) (3d) (4s, 4p) (4d) (4f) (5s, 5p) . . .

Step 2: Identify the electron of interest, and ignore all electrons in higher groups (to the right in the list from Step 1). These do not shield electrons in lower groups

Step 3: Slater's Rules is now broken into two cases:

the shielding experienced by an s- or p- electron,

electrons within same group shield 0.35, except the 1s which shield 0.30

electrons within the n-1 group shield 0.85

electrons within the n-2 or lower groups shield 1.00

the shielding experienced by nd or nf valence electrons

electrons within same group shield 0.35

electrons within the lower groups shield 1.00