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Which pair of species forms isobars?
ACarbon-12 and carbon-13
BCarbon-14 and nitrogen-14
CHydrogen-1 and hydrogen-2
DChlorine-35 and chlorine-37
Answer & Solution
Correct answer: B. Carbon-14 and nitrogen-14
Carbon-14 and nitrogen-14 share mass number 14 but have different atomic numbers 6 and 7.
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