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Question

What is the mass of one atom of neon if its gram atomic mass is 20 grams?

A
2.65×1023 grams
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B
3.32×1023 grams
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C
5.32×1023 grams
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D
4.32×1023 grams
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Solution

The correct option is B 3.32×1023 grams
1 mole of an element contains 6.022×1023 atoms.
1 mole of a compound contains6.022×1023 molecules.

Neon is monoatomic in nature.
It is given that the gram atomic mass of Neon is 20 g

So, 6.022×1023 atoms of Neon weigh = 20 grams

The mass of one atom
= 206.022×1023
= 3.32×1023 g


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