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Isotopes

Magnesium is ...

Question

Magnesium is two times heavier than C-12 atom, what shall be the mass of Mg atom in terms of atomic mass unit?

24u

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22u

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20u

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18u

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Solution

The correct option is A
24u

1u= $\frac{1}{12 t h}$ of C-12 atom

Mass of C-12 atom =12u

Mass of Mg is twice of C-12 atom = 2(12) = 24u

Suggest Corrections

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