What is the total charge of the nucleus of a carbon atom?

(1) - 6 (3) + 6

(2) 0 (4) + 12

Carbon atomic number ⇒ 6

Carbon mass number ⇒ 12.

Carbon atomic number - Carbon mass number = number of neutrons.

12 - 6 = 6 neutrons.

Proton charge ⇒ + 1

The total charge of the nucleus of a carbon atom ⇒⇒⇒ + 6.

So the naswer is (3) + 6