Easy 8th grade science, what must differ between the atom of two different elements? a: protons in the atom b: electrons in the atom c: neutrons in the atom d: protons and neutrons in the nucleus . no guessing.

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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