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sdas [7]
3 years ago
11

An atom has 4 protons 4 neutrons, and 4 electrons. This atom has a mass number of

Chemistry
2 answers:
Art [367]3 years ago
6 0

Answer:

16

Explanation:

Hope it helps you

Hope it helps you

kipiarov [429]3 years ago
5 0
Its nucleus also contains two neutrons. Since 2 + 2 = 4, we know that the mass number of the helium atom is 4. Finally, the helium atom also contains two electrons since the number of electrons must equal the number of protons.
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