Question

What is the valency of dioxide?

Answer 1

Valency

• The valency of an atom refers to its ability to combine with other atoms.
• The valency of an element determines the number of bonds that an atom can make as part of a complex.
• The electrons in the atom's outermost orbit are referred to as valence electrons.

Dioxide

• The dioxide is generally represented by ${\mathrm{O}}_2$, consisting of two oxygen atoms.
• One oxygen atom is having atomic number $8$ having electronic configuration $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^4$.
• When two oxygen atoms combine with each other then due to shared pair of electrons it shared zero valency.

Hence the valency of dioxide is $0$.