Molecules of hydrogen escape from earth, but molecules of oxygen and nitrogen are held to the surface and remain in the atmosphere. explain.

Hydrogen escape from Earth because he is ligher than molecules of nitrogen and oxygen. Hydrogen move faster and can escape Earth's gravitational force.

One mole of molecule of hydrogen (H ₂) has molecular mass 2 g/mol, molecule of nitrogen (N ₂) has molecular mass 28 g/mol and oxygen (O ₂) has 32 g/mol.