Question

Match the following with their correct characteristics.

• A. Same A
• B. Same (A - Z)
• C. Same Z

Answer 1

Isotopes are atoms of the same element, with the same atomic number Z, and different mass number A.

Isobars are the atoms of different elements, with the same mass number A, and different atomic number Z.

Isotones are the atoms of different elements, with different atomic and mass numbers, but the same number of neutrons, i.e. (A - Z).