Question

the following table gives the number of protons and neutrons in the nuclei of various atoms. which atom is the isotope of atom a? protons neutrons atom a 32 39 atom b 32 38 atom c 38 50 atom d 33 38 c none b d b and d

Explanation:

Step1: Recall isotope definition

Isotopes have same number of protons but different number of neutrons.

Step2: Compare protons and neutrons

Atom A has 32 protons and 39 neutrons. Atom B has 32 protons and 38 neutrons. Since Atom B has the same number of protons as Atom A but a different number of neutrons, it is an isotope of Atom A. Atom C has 38 protons, so it's not an isotope. Atom D has 33 protons, so it's not an isotope.

Answer:

C. B