Which molecular geometry is not possible for AB₄ type molecules?
Correct answer: A. Angular
- A. Angular
- B. Trigonal pyramidal
- C. Tetrahedral
- D. See-saw
Explanation
An AB₄ molecule has a central atom bonded to four surrounding atoms. Such species can adopt geometries like tetrahedral (AX₄), see-saw (AX₄E), or square planar (AX₄E₂). A bent or angular shape occurs only when the central atom is bonded to two atoms with lone pairs (AX₂E or AX₂E₂), so it is not possible for AB₄ molecules.
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