Question

question 9 of 10
two atoms have the same number of protons but a different number of neutrons. these atoms are:
a. molecules.
b. isotopes.
c. radiation.
d. electrons.

Explanation:

Isotopes are atoms of the same element (same number of protons) with different numbers of neutrons. Molecules are made of atoms. Radiation is energy. Electrons are sub - atomic particles, but the key here is the definition related to protons and neutrons which fits isotopes.

Answer:

B. isotopes.