Which of the following properties do isobars have in common?
Mass number
Isobars are atoms of different elements that have the same mass number but different atomic numbers (and hence a different number of protons).
Since their atomic numbers differ, their physical and chemical natures also differ.
Hence, this is the correct answer.
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What defines two elements as isobars?
Atoms of different elements with different ___________ numbers but the same ______ number are known as isobars.
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