Question

Br-79
Br-81


_______ are different forms of a single element.
Responses
A AtomsAtoms
B ElementsElements
C IonsIons
D IsotopesIsotopes
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Answer 1

The correct response is:

D - Isotopes

Br-79 and Br-81 are isotopes of the element bromine (Br), meaning they are different forms of the same element with the same number of protons but different numbers of neutrons.