TS EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Assertion (A): ${VF}_{5}$ is stable while ${VCl}_{5}$ is not.
Reason (R) : Fluorine stabilises the higher oxidation state due to its higher bond enthalpy.
The correct option among the following is

A $(A)$ is true, $(R)$ is true and $(R)$ is the correct explanation for $(A)$
B $(A)$ is true, $(R)$ is true but $(R)$ is not the correct explanation for $(A)$
C $(A)$ is true but $(R)$ is false
D $(A)$ is false but $(R)$ is true

Verified Solution

Answer & Solution

Correct Answer

(A) $(A)$ is true, $(R)$ is true and $(R)$ is the correct explanation for $(A)$

Step-by-step Solution

Detailed explanation

We know that fluorine atom can stabilise the higher oxidation state due to its higher melting point, higher bond enthalpy and small size and that is the reason with vanadium it forms VF5 whereas VCl5 is unstable due to the large size of chlorine atom such that there is no place…

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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Assertion (A): VF5 is stable while VCl5 is not.Reason (R) : Fluorine stabilises the higher oxidation state due to its higher bond enthalpy.The correct option among the following is

Step-by-step Solution

Assertion (A): ${VF}_{5}$ is stable while ${VCl}_{5}$ is not.
Reason (R) : Fluorine stabilises the higher oxidation state due to its higher bond enthalpy.
The correct option among the following is