NEET · Chemistry · STD 11 -p-Block elements - I

Which of the following statement is not correct about diborane?

A The four terminal \(B-H\) bonds are two centre two electron bonds.
B The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.
C Both the Boron atoms are \(s p^{2}\) hybridised.
D There are two \(3-\)centre\(-2-\)electron bonds.

Verified Solution

Answer & Solution

Correct Answer

(C) Both the Boron atoms are \(s p^{2}\) hybridised.

Step-by-step Solution

Detailed explanation

\(B\) has \(sp ^{3}\) Hybridisation Non- planar

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

Match List \(I\) with List \(II\).

List I (Complex)	List \(II\) (Type of isomerism)
\(A\). \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{NO}_2\right)\right] \mathrm{Cl}_2\)	\(I\). Solvate isomerism
\(B\). \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{SO}_4\right)\right] \mathrm{Br}\)	\(II\). Linkage isomerism
\(C\). \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]\left[\mathrm{Cr}(\mathrm{CN})_6\right]\)	\(III\). Ionization isomerism
\(D\). \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3\)	\(IV\). Coordination isomerism

Choose the correct answer from the options given below:

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