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Why is helium heavier than hydrogen​

Why is helium heavier than hydrogen​-example-1
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User Frieder
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2 Answers

5 votes

Answer:

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

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User Ben Manes
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5 votes
Helium has more protons making it heavier by one atomic mass.
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User Daniccan
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