Question

Define the term a. Valency b. Atomic size


for 5 marks​

Answer 1

Valency of an atom is simply equal to the number of electrons gained, lost or shared by an atom to achieve the nearest noble gas configuration. (ii) Atomic size: Atomic size or atomic radius is the distance between the centre of the nucleus and the outermost shell of an isolated atom.

Answer 2

Answer:

valency is the combining capacity of the element.

Atomic size is the distance from the nucleus to the valence shell where valence electrons are located.