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m(p) and m(n) are masses of proton and n...

`m_(p) and m_(n)` are masses of proton and neutron respectively. An element of mass M has Z protons and N neutrons then

A

`M gt Zm_(p)+Nm_(n)`

B

`M=Zm_(p)+Nm_(m)`

C

`M lt Zm_(p)+Nm_(n)`

D

M may be greater than less than or equal to `Zm_(p)+Nm_(n)` depending on nature of

Text Solution

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The correct Answer is:
C
When a nucleus is formed, then the mass of nucleus is slightly less than the sum of the mass of Z protons and N neutrons.
`ie, ,M lt (Zm_(p)+Nm_(n))`
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