GCEPhysicsAtomic and Nuclear Physics2021

Which of the following statements correctly describes isotopes?

AAtoms with the same mass number but different atomic numbers
BAtoms with the same atomic number but different mass numbersCORRECT
CAtoms with the same number of neutrons but different proton numbers
DAtoms with the same mass number and the same atomic number
AI
Toaster Teacher
Why the answer is B, and why the others tempt you.
Isotopes are atoms of the same element that have the same atomic number (same number of protons) but different mass numbers due to different numbers of neutrons. For example, Carbon-12 and Carbon-14 are isotopes of carbon.
Want this in Pidgin, Yoruba, Igbo or Hausa? Sign up free →

Practice more Physics questions

GCE Physics has thousands more questions like this — with Worked answers on every one.

Start practicing free →See all Physics questions