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26 November, 08:15

3 Which subatomic particles make up a majority of the

mass of an atom?

1. Protons

2. Electrons

3. Neutrons

A 1 only

B 1 and 3 only

C 3 only

D 2 and 3 only

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Answers (1)
  1. 26 November, 08:40
    0
    1 and 3 only, electrons are significantly smaller than both neutrons and protons. Neutrons and protons also make up the biggest part of the atom, the nucleus.
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