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What is the mass equivalent to 1 amu?

  • Option 1)

    \frac{1}{12}{th}of C -12 isotope

  • Option 2)

    \frac{1}{16}{th} of O -16 isotope

  • Option 3)

    H - 1 isotope

  • Option 4)

    \frac{1}{4}{th}of the He atom

 

Answers (1)

best_answer

As we learnt in 

Atomic Mass Unit -

amu is used to measure mass of individual atoms.

- wherein

mass of one atom of Helium= 4 amu

Today, ‘amu’ has been replaced by ‘µ’ which is known as unified mass.

 

 

 

1 amu = \frac{1}{12}{th}of the mass of C-12 atom.


Option 1)

\frac{1}{12}{th}of C -12 isotope

Correct

Option 2)

\frac{1}{16}{th} of O -16 isotope

Incorrect

Option 3)

H - 1 isotope

Incorrect

Option 4)

\frac{1}{4}{th}of the He atom

Incorrect

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Plabita

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