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Mn and Mp represent mass of neutron and ...

`M_n` and `M_p` represent mass of neutron and proton respectively. If an element having atomic mass `M` has `N-`neutron and `Z`-proton, then the correct relation will be :

A

`M lt [NM_(n) + ZM_(p)]`

B

`M gt [NM_(n) + ZM_(p)]`

C

`M = [NM_(n) + ZM_(p)]`

D

`M = N [M_(n) + M_(p)]`

Text Solution

Verified by Experts

The correct Answer is:
A
Actual mass of the nucleus is always less than total mass of nucleons , so `M lt (N M_(n) + Z M_(p))`.
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Knowledge Check

  • M_(n) and M_(p) represent mass of neutron and proton respectively. If an element having nuclear mass M has N neutron and Z protons, then the correct relation will be

    A
    `Mlt[NM_(n)+ZM_(p)]`
    B
    `Mgt[NM_(n)+ZM_(p)]`
    C
    `M=[NM_(n)+ZM_(p)]`
    D
    `M=N[M_(n)+M_(p)]`

  • 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

  • If m,m_n and m_p are masses of ._Z X^A nucleus, neutron and proton respectively.

    A
    `m = (A - Z)m_n + Z m_p`
    B
    `m lt (A - Z)m_n + Z m_p`
    C
    `m gt (A - Z) m_n + Z m_p`
    D
    `m = (A - Z) m_p + Z m_p`

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