The electrical charge on an atom as a whole is

The electrical charge of an atom is determined by the number of electrons it has gained/lost. Electrons have a negative charge. We will let "e" be the amount of electrical charge carried by an electron.

If the atom has not lost or gained any electrons, it has a neutral, or zero, charge.

If the atom has 2 extra electrons, the atom is overall negatively charged with a charge equal to -2e.

If the atom has lost 2 electrons, the atom is overall positively charged with a charge equal to +2e.

If you want the charge quantities in Coulombs, use the conversion rate:

e = 1.6×10⁻¹⁹C

explanation:

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