NUCLEI class 12 physics ch 13 revision notrs pdf , class 12 physics revision notes of chapter 13 NUCLEI by blue sky pcm , blue sky posts YOUTUBE VIDEO- watch video PDF FILE- PDF notes all the important topics covered . topics covered---- Nucleus, composition of nucleus,mass of protons,mass of neutron, charge of protons, charge of neutron, mass and charge of electron. atomic number,mass number, size of nucleus, volume of nucleus,nuclear mass,nuclear density, atomic mass unit , mass energy relationship. mass defect, isotopes, isobars,isotones, binding energy, binding energy per nucleon , stability of nucleus, important feature of binding energy curve. Nuclear force. it's properties, charge independent, radioactivity, nuclear radiation, alpha particles,beta particles,gamma particles,rays comparison of alpha, beta and gamma. laws of radioactive disintegration. radioactive decay constant. radioactive decay law. half life, full life, average life,mean life activity, Nucl