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What is the mass number of an element A, if A^(4-) contains 10 electrons and 6 neutrons? [Divide anser by 2] |
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Answer» SOLUTION :`A^(-4)rArre^(-)=10` after GAIN of 4 electrons so in neutral ATOMS number of electrons=6 so number of protons=6 Mass number=number of p+ number of N `=6+6=12` |
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