Question

Problem 28a

Answer 1

Given information

   ion is given. Whether it is paramagnetic or diamagnetic must be predicted after writing the orbital diagram.

Step-by-step explanation

Step 1.

Cadmium    has atomic number  .

As per Aufbau's building up principle, electrons are filled in lower energy orbitals followed by higher energy orbitals.

According to Hund's rule while filling degenerate orbitals electrons occupy those orbitals singly and then pairing can takes place.

As per Pauli's exclusion principle no two electrons in an atom can have identical set of four quantum numbers.

Following these three basic rules electronic configuration for  is . Here is the electronic configuration of Krypton, an inert gas of period 4 and group 18.

An ion is considered diamagnetic if there is no unpaired electron.  

An ion is considered paramagnetic if there is unpaired electron.