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Q:

How many times the mass of a hydrogen atom is the mass of an electron?

  • 1
    1000
  • 2
    8000
  • 3
    1837
  • 4
    5000
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Answer : 3. "1837"
Explanation :

A hydrogen atom has only one proton, one electron and zero neutrons and the positively charged proton is approximately 1837 times as heavy as the mass of the negatively charged electron.

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