Can a molecule only contain one kind of atom?

1 Answer
Dec 3, 2016

NO,NO2,CO2,CH4,CO are ALL GASEOUS molecules at normal temperatures and pressure.............

Explanation:

Do these species contain only the one type of atom?

On the other hand, I could point to N2, or O2, or O3, or F2. These species are also molecular, and as elemental species they contain only the one element.