Atoms of the same element whose nuclei contain the same number of protons,but different numbers of neutrons,are called
A)isotopes.
B)ions.
C)isomers.
D)trace elements.
E)principal elements.

Question

Quizplus · Accepted Answer

Isotopes are atoms of the same element that have different numbers of neutrons in the nucleus, but the same number of protons and electrons. This results in isotopes having slightly different atomic masses, but the same chemical properties.

Atoms of the Same Element Whose Nuclei Contain the Same