Question

Define following periodic properties of elements 1. valency 2.Atomic size ​

Answer 1

Answer:

Valency is the number of atoms accepted or donated by an atom.

Explanation:

Atomic size is the Atomic mass= no. of protons + no. of neutrons

Answer 2

Answer:

Valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules.

Atomic size is determined by the atomic radius. For an isolated atom, its atomic radius is the distance between the center of the atom (i.e. center of its nucleus) and its outermost shell

Please mark it as brainliest