Question

An alpha particle has an atomic mass of _____.
1 amu
2 amu
3 amu
4 amu

Answer 1

The correct answer is 4 amu

An alpha particle has an atomic mass of 4 amu

Answer 2

4 amu

Step-by-step explanation:

Rutherford verified that the alpha particle is a set of two protons and two neutrons, that is, it is the nucleus of the helium atom. It has an electric charge equal to + 2e, and a mass of 4.002764 units of atomic mass (amu), that is, almost 4 times the mass of the hydrogen atom.