2O total mass of H in H2O + total mass of O in H2O = total mass of compound For H → total mass of H / total mass of compound = / x 100 = For O → total mass of O / total mass of compound= / x 100 =

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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