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The number of atoms present in one mole ...

The number of atoms present in one mole of an element is equal to Avogadro number. Which of the following elements contains the greatest number of atoms ?

A

4 g He

B

46 g Na

C

0.40 g Ca

D

12 g He

Text Solution

Verified by Experts

The correct Answer is:
D
4 g He = 1 mol
46 g Na = 2 mol
0.4 g Ca = 0.01 mol
12 g He = 3 mol
Therefore (d) is the correct option.
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