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18 February, 19:48

An atom has a mass number of 52. if there are 27 neutrons in the atom, then the atom must be:

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  1. 18 February, 20:09
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    Mass number - number of neutrons = number of protons.

    52-27=25 protons.

    Number of protons = atomic number = 25

    It is Mn (manganese).
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