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Calculation of Mass Number for Isotopic Elements

The relative ...

Question

The relative atomic mass of a light element up to calcium is approximate…………..its atomic no.

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Solution

Calcium is an alkaline earth metal having atomic number 20 and mass number 40.
Calcium has an atomic mass of almost 20 more than its atomic no.
Therefore, The relative atomic mass of a light element up to calcium is approximately 20 its atomic no.

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Calculation of Mass Number for Isotopic Elements

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