Which statement describes the mass and weight of a textbook on Earth and on the Moon? A. The mass and weight are both greater on Earth than on the Moon.
B. The mass and weight are the same both on Earth and on the Moon.
C. The mass is the same on Earth and the Moon, but the weight is greater on Earth.
D. The weight is the same on Earth and the Moon, but the mass is greater on Earth.

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 believe the answer is 5,000