PHYSICS

Unstable hydrogen isotope contains 1 proton 2 neutrons Now, alpha particles are the particles with 2 protons 2 neutrons What do you think? As there are insufficient particles in the hydrogen isotope, no alpha particles can be released.

Cloud appears white due to the phenomena of scattering of white light. The water particles in the cloud are big in size as compared to air molecules and wavelength of light. Hence all the colours get scattered in equal intensity and mixture of all colours gives white light. This white light reaches our eyes giving the impression that colour of a cloud is white.