Question

WHAT IS VALENCY
WHAT IS POLY ATOMIC ION

Answer 1

Answer:

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Explanation:

In chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. The concept of valence was developed in the second half of the 19th century and helped successfully explain the molecular structure of inorganic and organic compounds.

A polyatomic ion, also known as a molecular ion, is a charged chemical species composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit. The prefix poly- means "many," in Greek, but even ions of two atoms are commonly referred to as polyatomic.

Answer 2

Answer:

Valency is the combining capacity of an atom.

Polyatomic ion is known as Molecular Ion.