CUET · CHEMISTRY · PYQ PAPER 2023
Which of the following is not tetrahedral in shape?
- A NH
- B \(SiCl _4\)
- C \(SF _4\)
- D \(SO _4^{2-}\)
Answer & Solution
Correct Answer
(C) \(SF _4\)
Step-by-step Solution
Detailed explanation
For \(SF _4\): Central atom S: 6 valence e\(^-\). Forms 4 bonds to F. Lone pairs \( = (6 - 4) / 2 = 1 \). Steric number \( = 4 \text{ (bonding pairs)} + 1 \text{ (lone pair)} = 5 \). Molecular geometry: seesaw.
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