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The mass number of a nucleus is equal to...

The mass number of a nucleus is equal to

A

the number of neutrons in the nucleus

B

the number of protons in the nucleus

C

the number of nucleons in the nucleus

D

none of them

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The mass number of a nucleus of an element is

    A
    Always less than its atomic number
    B
    Always more than its atomic number
    C
    Sometimes equal to its atomic number
    D
    Sometimes more than and sometimes equal to its atomic number.

  • Assertion Positive value of packing fraction implies a large value of binding energy. Reason The ratio of the difference between the atomic mass of nucleus and the mass number of the nucleus to that of atomic mass is called packing fraction.

    A
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
    B
    If both Assertion and Reason are true but Reason are true but Reason is not correct explanation of Assertion.
    C
    If Assertion is true but Reason is false.
    D
    If Assertion is false but Reason is true.

  • If A is mass number of a nucleus of Radius R, then

    A
    `A prop R^2`
    B
    `A prop R^(1/3)`
    C
    `A prop R`
    D
    `A prop R^3`

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    The radius of a spherical nucleus as measured by electron scattering is 3.6 fm. What is the mass number of the nucleus most likely to be ?

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    The number of neutrons is equal to the number of protons present in the nucleus of two elements X and Y and their dinegative ions possess 8 electrons in the L and M shells, respectively. Then the ratio of mass numbers of the two elements is

    Assertion : Mass number of an atom is equal to total number of nucleons present in the nucleus Reason :Mass number defines the identity of an atom

    Atomic number of a nucleus is Z and atomic mass is M . The number of neutron is.

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