Atomic mass number defination
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Atom mass number
The sum of proton and neutron presents in the nucleus of an atom.
Example :mass no. Of nitrogen is14 then it contain 7proton and 7 neutron...
Atom mass number
The sum of proton and neutron presents in the nucleus of an atom.
Example :mass no. Of nitrogen is14 then it contain 7proton and 7 neutron...
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