Question

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

Options

• N₂O

• NO₂

• N₂O₅

• NO

Answer 1

N₂O₅

Explanation

In the structure of ClF₃, chlorine (Cl) is the central atom bonded to three fluorine (F) atoms. Chlorine has 7 valence electrons; 3 are used for bonding with fluorines, leaving 4 electrons (or 2 lone pairs) on Cl. Hence, the number of lone pairs of electrons on the central Cl atom in ClF₃ is two.