MHT CET · Chemistry · Structure of Atom

Which of the following statements is correct regarding isobars?

A These have same number of neutrons.
B These are the atoms of different elements.
C These have same atomic number.
D These have different mass number.

Verified Solution

Answer & Solution

Correct Answer

(B) These are the atoms of different elements.

Step-by-step Solution

Detailed explanation

Isobars are the atoms of different elements having the same mass number but different atomic number. For example, \({ }_6^{14} \mathrm{C}\) and \({ }_7^{14} \mathrm{~N}\).

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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