If a dipositive ion has 24 electron and mass number is 56 the number of neutrons present is
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The no. of neutrons can be calculated as follows:
Positive charge or negative charge changes only the no. of electrons but does not change the no. of neutrons or protons or even mass no.
No. of neutron = Atomic Mass - Atomic No.
No. of neutron = 70 (atomic mass of Zn2+) - 30 (atomic no. or no. of protons of Zn2+)
No. of neutron = 70-30=40
40 neutrons are present in Zn2+ ion.
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