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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Medium

1 of 1

Understanding +4 | -1

X

' is the amount of a substance that contains as many particles as there are atoms in exactly

12 \mathrm{~g}

of the

Y

isotope.

X

and

Y

respectively are

View answer and explanation

Correct option: C

A \rightarrow

one mole,

B \rightarrow{ }^{12} \mathrm{C}

Option C is correct because one mole is defined as the amount of substance containing as many particles as there are atoms in exactly 12g of the carbon-12 isotope.

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