1. Name the three sub atomic particles of an atom.
2. Helium atom has an atomic mass of 4u and two protons in its nucleus. How many neutrons does it have?
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2
Answer:
proton neutron and electron
2neutrons babes
Explanation:
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2
Answer:
1. Three sub atomic particles of an atom are
(a) protons
(b) neutrons
(c) electrons
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