If two different isotopes have the same atomic number,it means that _____.
A) they have the same atomic mass
B) they have the same atomic number
C) they have the same number of protons
D) they have the same number of electrons
E) they have the same number of neutrons

Question

Quizplus · Accepted Answer

Isotopes of an element have the same number of protons (which determines the atomic number) but different numbers of neutrons, which results in different atomic masses. Therefore, if two different isotopes have the same atomic number, they must have the same number of protons.

If Two Different Isotopes Have the Same Atomic Number,it Means