Why is helium heavier than hydrogen

asked Apr 2, 2021 1.8k views

1 vote

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Answer:

because it's has an additional electron. hydrogen is just made up of one proton

Ben Manes answered Apr 4, 2021

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5 votes

Helium has more protons making it heavier by one atomic mass.

Daniccan answered Apr 7, 2021

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