Question

helium atom has an atomic mass of 4u and two protons in its nucleus. how many neutrons does it have​

Answer 1

Answer:

2 neutrons are present in the nucleus of helium.

Answer 2

Answer:

Atomic mass= Number of neurtrons +number of protons.

Explanation:

therefore, no. of protons in helium =2

hence, no. of neutrons = 2

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