Rankers Physics

Nucleus: Practice Problem & Solution

$\alpha$-particle consists of : (2019)
2 protons and 2 neutrons only
2 electrons, 2 protons and 2 neutrons
2 electrons and 4 protons only
2 protons only

Solution Explained:

To solve this problem, we apply the core principles of Nucleus. Understanding the underlying formula is key to arriving at the correct answer below:

An $\alpha$-particle is identical to a helium-4 nucleus, which contains exactly 2 protons and 2 neutrons, with no electrons.

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