What statement about isotopes is NOT correct? A. isotopes are versions of the same element
B. all isotopes of the same element have the same number of protons
C. there are only two isotope versions of each element
D. isotopes vary by the number of neutrons in the nucleus

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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i think its 100.

hope this !