Q.2. As suggested by researches conducted till now, the atom consists of a central nucleus and orbiting electrons; the nucleus is very small but it contain whole atom`s mass, this mass mainly comes from particles called

A. Nucleon

B. Nuclear body

C. Nuclear particles

D. Atomic particles

Explanation

The atom consists of a central nucleus and orbiting electrons. The nucleus is very small [10^-15m], but it contains all the atom`s mass. This mass comes mainly from particles called nucleons, which are sub-divided into protons and neutrons.

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