Forms of an element having the same atomic number but different atomic mass numbers are called
A) atomic number.
B) mass numbers.
C) isotopes.
D) nuclei.
E) electrons.

Question

Quizplus · Accepted Answer

Isotopes are forms of an element that have the same number of protons (atomic number) but different numbers of neutrons (atomic mass). This results in different mass numbers for each isotope.

Forms of an Element Having the Same Atomic Number but Different