What is it called when there are two of the same element that have the same number of protons and electrons, but a different number of neutrons?

A. molecule
B. isotope
C. compound
D. proton



Answer :

Final answer:

Isotopes are elements with the same protons but different neutrons. They have different mass numbers and atomic numbers.


Explanation:

Isotopes are elements with the same number of protons but different numbers of neutrons. They have the same atomic number but different mass numbers. For example, hydrogen has isotopes like deuterium and tritium with varying numbers of neutrons.


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