Question

an alpha particle is equivalent to the nucleus of an atom of which element? (1 point)
○ hydrogen
○ helium
○ carbon
○ nitrogen

Explanation:

An alpha - particle consists of 2 protons and 2 neutrons, which is equivalent to the nucleus of a helium atom. Helium has an atomic number of 2 and a mass number of 4, and its nucleus contains 2 protons and 2 neutrons, just like an alpha - particle.

Answer:

helium