α-particle consists of:

$\alpha$-particle consists of:
A 2 protons and 2 neutrons only
B 2 electrons, 2 protons and 2 neutrons
C 2 electrons and 4 protons only
D 2 protons only

Detailed Solution

An $\alpha$-particle is the nucleus of a helium atom, which has two protons and two neutrons only.

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