Question : Isobars have ______.
Option 1: Same mass number but different atomic numbers
Option 2: Different mass numbers but same atomic numbers
Option 3: Same mass and atomic numbers
Option 4: Different mass and atomic numbers
Correct Answer: Same mass number but different atomic numbers
Solution : The correct option is the same mass number but different atomic numbers
Isobars are atoms or ions with the same mass number but distinct atomic numbers. The total number of protons and neutrons in an atom's nucleus is its mass number. Since atoms with various atomic numbers but the same mass number have varying quantities of protons, they are distinct elements. Isobars differ chemically yet have the same overall mass due to differences in their atomic structures.
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