Question

The valency of an element is determined by the number of present in the atom of that element.

• A. electrons
• B. protons
• C. neutrons

Answer 1

The correct option is A electrons

$\bullet$ Valency is defined as the combining capacity of an element. The electrons present in the last shell of an atom are called valence electrons. Given below is a short-cut method to calculate valency.

$\bullet$ When the number of valence electrons is less than or equal to four, the valency = number of valence electrons.

$\bullet$ When the number of valence electrons are greater than four, the valency = 8 - valence electrons.