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SashulF [63]
3 years ago
11

An alpha particle is composed of

Biology
2 answers:
Arturiano [62]3 years ago
6 0

Answer: B. two protons and two neutrons

Explanation: Alpha rays are fast moving streams of positively charged particles which are shown to be helium nuclei represented by 4He2, having a mass number of 4, i.e., having 2 protons and 2 neutrons. Mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom. A helium atom has 2 protons and 2 neutrons in its atom.

Nuetrik [128]3 years ago
4 0
B. Two protons and two neutrons
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