TS EAMCET · Chemistry · Chemical Bonding and Molecular Structure

Which of the following ions has Tetrahedral geometry and ${sp}^{3}$ hybridisation for its central atom?

A ${BH}_{4}^{-}$
B ${NH}_{2}^{-}$
C ${CO}_{3}^{2 -}$
D $H_{3} O^{+}$

Verified Solution

Answer & Solution

Correct Answer

(A) ${BH}_{4}^{-}$

Step-by-step Solution

Detailed explanation

Ionic compound Steric Number/Hybridisation Geometry BH4- 4-sp3 Tetrahedral NH2- 4-sp3 V-shaped CO32- 3-sp2 Trigonal Planar H3O+ 4-sp3 Pyramidal Hence, BH4- ion has Tetrahedral geometry and sp3 hybridisation for its central atom.

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 TS EAMCET

List-I (Units)	List-II (Dimensional Formulas)
A. Pa-s	(i) [L² T^-2 K^-1]
B. NmK^-1	(ii) [MLT^-3 K^-1]
C. J kg^-1 K^-1	(iii) [ML^-1T^-1]
D. Wm^-1 K^-1	(iv) [ML²T^-2K^-1]

Explore more questions on app

Equanil	Chloramphenicol	Bithionol
$(A)$	$(B)$	$(C)$
Aspartame	Dimetapp	Butylated hydroxytoluene
$(D)$	$(E)$	$(F)$

Which of the following ions has Tetrahedral geometry and sp3 hybridisation for its central atom?

Step-by-step Solution

Which of the following ions has Tetrahedral geometry and ${sp}^{3}$ hybridisation for its central atom?