निम्नलिखित में से किस परमाणु के नाभिक में न्यूट्रॉन नहीं होता है ? - Which of the following atoms does not have a neutron in its nucleus? - NimnLikhit Me Se Kis Parmanu Ke Nabhik Me Neutron Nahin Hota Hai ? General Science in hindi, Physics Hydrogen question answers in hindi pdf tritium questions in hindi, Know About Lithium General Science online test General Science notes in hindi quiz book Helium