Question

The ion of an element has 3 positive charges. The mass number of the atom is 27 and the number of neutrons is 14. The number of electrons in the ion is ___ .

Answer 1

Mass number= No.of proton + No. of neutrons

27-14 = No. of protons

No. of protons = No. of electrons

=13 - 3 (3 positive charge)

=10 electrons