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21 June, 10:55

One isotope of a metallic element has the mass number 63 and 33 neutrons in the nucleus. The cation derived from the isotope has 28 electrons.

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  1. 21 June, 11:13
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    Given

    Mass number of isotope = 63

    Number of neutrons = 33

    So number of protons = 63 - 33 = 30

    Hence atomic number of metal = 30

    thus metal is = zinc

    now as it is forming cation with 28 electrons it means it has lost two electrons so it must have a dipositive charge

    the symbol of metal ion will be

    Zn^+2
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