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Rutherford's Model of an Atom

An atom has 1...

Question

An atom has 16 neutrons in its nucleus. The atomic no. of the element is 15, the mass number of the element is :

A

15

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B

16

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C

31

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D

None of the above

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Solution

The correct option is C 31
Mass no. = p + n
Atomic no = no.of protons = 15
Mass no = 15 + 16 = 31

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