Question

Select One Option Correct from the following : The mass number of a nucleus is
(A)always less than its atomic number.
(B)always more that its atomic number.
(C)sometimes equal to its atomic number.
(D)sometime more than and sometimes equal to its atomic number.

Answer 1

Either (Equal to atomic number) or (More than atomic number)

the mass number of a nucleus is

the correct option will be option d sometime more than and sometimes equal to its atomic number.

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