Bromine particles are almost twice as heavy as Chlorine particles.Which gas will diffuse faster.Why ?

A particle having no charge and almost no rest mass

Neutron is a fundamental particle which carries ?

Which of the following particles is most unstable?

The diffusion of particles in colloid is

When Hydrogen chloride gas and Ammonia gas diffuse in a long glass tube and react with each other to give white fumes of Ammonium Chloride, which gas travelled faster ?