Question

The number of electron(s) lost , gained or shared by atom of an element to form

a chemical bond to attain stable electronic configuration is called ____.

Electron number

Magic number

Valency

Effective atomic number​

Answer 1

Answer:

VALENCY is your answer

Explanation:

if the atom lose or gain electrons the form ions the number as power is called valency.

Ex    $K^+$ where K is potassium ion and + indicates valency