Explain the formation of hydrogen, oxygen and nitrogen molecules.

Explain formation of covalent bond by the electron structure of hydrogen, oxygen and nitrogen molecules.

The number of electron pairs involved in the formation of hydrogen cyanide molecule are

A mixture of n mole of Nitrogen and 1 mole of hydrogen is kept is a container at room, temperature. The ratio of r.m.s. velocities of hydrogen and nitrogen molecules is:

What is the proportion of hydrogen and oxygen in molecule of all member of carbohydrate ?

Ratio in hydrogen and oxygen in water molecule by volume is

Explain the significance of nitrogen, oxygen and water vapour present in the atmosphere.