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The mass number of a nucleus is...

The mass number of a nucleus is

A

Always less than its atomic number

B

Always more than its atomic number

C

Sometimes equal to its atomic number

D

Sometimes less than and sometimes more than its atomic number

Text Solution

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The correct Answer is:
C
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The mass number of a nucleus of an element is

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The radius of a nucleus is given by r_(0) A^(1//3) where r_(0) = 1.3xx 10^(-15) m and A is the mass number of the nucleus, the Lead nucleus has A = 206. the electrostatic force between two protons in this nucleus is approximately

AAKASH INSTITUTE-NUCLEI-ASSIGNMENT (SECTION-C)
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