Question

What are the ground state electron configurations of the d-metals from yttrium to cadmium.

Answer 1

Configuration of an element can be written by following these 3 rules:- 1. Afbau principle -- it states that orbitals are always filled in increasing order of energy. 2. Hund's rule of Maximum mutliplicity - it states that each orbital must be singly filled first then the pairing of electrons starts. 3. Pauli's exclusion principle -- it states that no two electrons in an atom can have all the four quantum numbers same. If 3 quantum numbers are similar then fourth will be definitely different.

Yttaiums2, 2s2 2, 3 3p6, 4s 3d4p,5s4d ZisIConium Is2, 2s2, 2b6, 3s2, 3p6, 46 3d 4b, 5s, Nio bium Is2, 2s 2p, 3s2, 3p6 4s, 3d1 4, 5s, 4 Is2, 2s, 2p, 3s 3p6, 4s, 3d°, 4p 5s, 4d5 Molybdenum Is, 2s2, 2p6, 3s2, 3pe, ys 3d0, 4p, 5s 4 Technetium RutheniumIs, 2s2, 2p6, 3s 3p 4s, 3d yp,5s', d 4, 5s',4d Khodium Is 2s 26, 3s2, 3p, 4s, 3d Palladium Is 2s 2p, 3s 3p, 4s 3d p ,4lo Silvesi Is, 2s 2p6, 3s, 3p, 4s, 3d 5, 4d Cadmium Is 2s 26, 3s 3p, 4s2 3d1 4, 5s2,4

Configuration of an element can be written by following these 3 rules:- 1. Afbau principle -- it states that orbitals are always filled in increasing order of energy. 2. Hund's rule of Maximum mutliplicity - it states that each orbital must be singly filled first then the pairing of electrons starts. 3. Pauli's exclusion principle -- it states that no two electrons in an atom can have all the four quantum numbers same. If 3 quantum numbers are similar then fourth will be definitely different.