Question

explain how tendency to gain electrons change on moving down a group(3 marks)

Answer 1

tendecy to gain electrons decreases on moving down a group as electronegativity decreases as we move down a group. Seconly a donate electrons increase.

Answer 2

As we move down the ground, new shells get added. This increases the distance between the nucleus and outermost electrons. The effective nuclear charge experienced by the electrons decreases. Thus, Ability to gain electrons increases.