Question

What is the charge on an ion that has an atomic number of 12 and contains 14 e− ?

a) 1-
b) 2+
c) 1+
d) 2-
e) none of the above

Answer 1

D the answer is -2 charge

Answer 2

The ion with an atomic number of 12 and 14 electrons has a 2- charge, indicating it has gained 2 extra electrons compared to its number of protons.

Step-by-step explanation:

The charge on an ion is determined by comparing the number of protons in the nucleus to the number of electrons surrounding the nucleus. A neutral atom has an equal number of protons and electrons. For an atom with an atomic number of 12, like magnesium (Mg), it normally has 12 protons. However, if the atom contains 14 electrons instead of the usual 12, it means it has more electrons than protons. Since electrons carry a negative charge, an excess of 2 electrons (14 electrons - 12 protons = 2 extra electrons) results in an overall negative charge on the ion. Therefore, the charge on the ion with an atomic number of 12 and containing 14 electrons is 2-.