The Lewis acids are__________________?
Correct answer: A. Electron deficient
- A. Electron deficient
- B. Electron rich
- C. Octet is complete
- D. No such acids exist
Explanation
A Lewis acid accepts an electron pair, so it is commonly electron-deficient or has an incomplete octet, as in BF3 or AlCl3. Students may choose electron-rich because acids are associated with H+ ions, but Lewis acidity specifically means electron-pair acceptance.
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Valence shell electron pair repulsion theory predicts molecular shape by arranging bonding pairs and lone pairs around a central atom to minimize repulsion. Questions cover linear, trigonal planar, tetrahedral, trigonal bipyramidal and octahedral electron geometries, bond angles and distortions caused by lone pairs. Electron geometry is not always the same as molecular shape.
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