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Chemistry CBSE Live product
Class 9 (2025-26)
Structure of the atom
Annual Revision VI - Structure of the atom
3.
Chemical properties of isotopes and isobars
Question:
1
m.
Pick the correct choice for the following assertion-reason pair:
Assertion (A):
Isobars of different elements show different chemical properties.
Reason (R):
Isobars have the same mass number but different atomic numbers.
Both A and R are true, and R is the correct explanation of A
Both A and R are true, but R is not the correct explanation of A
A is true, R is false
A is false, R is true
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