The number of electrons in an atom of an element is the same as the element's
A) atomic number.
B) period number.
C) mass number.
D) group number.

Question

Quizplus · Accepted Answer

The number of electrons in a neutral atom is equal to the atomic number, which is the number of protons in the nucleus. This is because the number of protons (positively charged) is balanced by the same number of electrons (negatively charged) to make the atom neutral.

The Number of Electrons in an Atom of an Element