Isobars have different: MCQ with Answer and Explanation

Isobars have different:
A. Atomic numbers
B. Numbers of neutrons
C. Both B and C
D. Mass numbers
Answer: Option C
Solution (By JKExamLibrary)
Isobars are atoms of different elements, so they have different atomic numbers (protons). Since mass number is same, number of neutrons also differs. Example: ⁴⁰Ar (Z=18, N=22) and ⁴⁰Ca (Z=20, N=20). Mass number = 40 same. So both atomic number and neutrons differ. Option D is correct as both B and C are true.

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