MHT CET · Chemistry · Hydrogen

Which of the following properties of hydrogen is similar to halogen family?

A Ionisation enthalpy
B Formation of unipositive ion
C Electronic configuration
D Electron gain enthalpy

Verified Solution

Answer & Solution

Correct Answer

(A) Ionisation enthalpy

Step-by-step Solution

Detailed explanation

Like halogens, hydrogen exists as a diatomic gas. Like halogens, hydrogen exhibits -1 oxidation state in its compounds with metals. Like halogens, hydrogen is liberated at cathode. The ionisation energy of hydrogen is quite close to halogens.

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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