The mass number of a nucleus is.A. sometimes equal to its atomic numberB. sometimes less than and sometimes more than its atomic numberC. always less than its atomic numberD. always more than its atomic number

The mass number of a nucleus is.A. sometimes equal to its atomic numbe

1.	The mass number of a nucleus is.A. sometimes equal to its atomic numberB. sometimes less than and sometimes more than its atomic numberC. always less than its atomic numberD. always more than its atomic number
Answer» Correct Answer - A

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The binding energy per nucleon number for deutron `H_(1)^(2)`and helium ` He_(2)^(4)` are `1.1 MeV` and `7.0 MeV` respectively . The energy released when two deuterons fase to form a belium nucleus `He_(2)^(4)` is ……..A. `2.2MeV`B. `23.6MeV`C. `28.0MeV`D. `30.2MeV`
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The mass number of a nucleus is.A. sometimes equal to its atomic numberB. sometimes less than and sometimes more than its atomic numberC. always less than its atomic numberD. always more than its atomic number

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