Question

what is group and valancy​

Answer 1

Explanation:Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell. Group number.

Group

In mathematics, a group is a set equipped with an operation that combines any two elements to form a third element while being associative as well as having an identity element and inverse elements. These three conditions, called group axioms, hold for number systems and many other mathematical structures.

valancy

In chemistry, the valence or valency of an element is the measure of its combining capacity with other atoms when it forms chemical compounds or molecules.

Answer 2

Explanation:

valency refers to the ability of an atom or a group of chemical bonded atom to from chemical from with other atoms or group of atoms.

The valency of an element is determined by the number of outer shell ( valency ) electron.