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Isotopes

Assume a cert...

Question

Assume a certain element Y contains one more proton and two more neutrons than protium. Then the mass number of element Y will be

A

3

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B

2

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C

4

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D

5

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Solution

The correct option is C 4
Protium contains one proton and zero neutrons. Therefore, element Y will contain two protons and two neutrons. So the mass number of the element Y will be 2 + 2 = 4.

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