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what is the expected geometry of molecules of AX3, AX4, and AX5types? give one examples of each.
HELLO THERE! Here I am assuming that X does not represent Halogens. It represents normal surrounding atoms of A. First, AX3: Hybridisation = sp2There is no Lone pair, so Geometry of the molecule is Trigonal Planar (bond angle = 120o)Example: BH3If there is one lone pair, geometry is V-shaped/Bent-Shaped. Second, AX4:Hybridisation = sp3There is no Lone pair, so Geometry is Tetrahedral (bond angle = 109.5o).Example: CH4If there is one lone pair, geometry is Pyramidal.If there are two lone pairs, geometry is V-shaped/Bent-shaped. Third, AX5:Hybridisation = sp3dThere is no lone pair, so geometry is Trigonal Bipyramidal.Example: PCl5.If there is one Lone Pair, geometry is Seesaw.If there are two Lone Pairs, geometry is T-shaped.If there are three Lone Pairs, geometry is Linear.
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