Question

Two descriptions for a sub-atomic particle are listed below:

Description 1: Has a noticeable relative mass
Description 2: Located inside the nucleus of an atom

Which sub-atomic particle or particles fit these descriptions?

Electrons only
Protons only
Electrons and neutrons
Protons and neutrons

Answer 1

Can not be D or B and A is not enough so C is right.

Answer 2

C) Electrons and neutrons :)

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