AP EAMCET · Chemistry · d and f Block Elements

Assertion (A) : Transition elements have higher enthalpies of atomization.
Reason (R) : Large number of unpaired electrons present in transition elements facilitate strong interatomic interaction and strong bonding between atoms.

A Both (A) and (R) are correct and (R) is the correct explanation of \((A)\)
B Both (A) and (R) are correct and (R) is not the correct explanation of (A).
C (A) Is correct and (R) is incorrect.
D (A) Is incorrect and (R) is correct.

Verified Solution

Answer & Solution

Correct Answer

(A) Both (A) and (R) are correct and (R) is the correct explanation of \((A)\)

Step-by-step Solution

Detailed explanation

More the no. of valence electrons more is the overlapping. This phenomenon also leads to the high melting and boiling point.

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.

Same subject

Explore more questions on app

From AP EAMCET

Explore more questions on app

Assertion (A) : Transition elements have higher enthalpies of atomization.Reason (R) : Large number of unpaired electrons present in transition elements facilitate strong interatomic interaction and strong bonding between atoms.

Step-by-step Solution

Assertion (A) : Transition elements have higher enthalpies of atomization.
Reason (R) : Large number of unpaired electrons present in transition elements facilitate strong interatomic interaction and strong bonding between atoms.