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B
hexahedral
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C
pentahedral
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D
none of the above
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Solution
The correct option is C distorted tetrahedral The ammonia molecule has a trigonal pyramidalor distorted tetrahedral shape as predicted by the valence shell electron pair repulsion theory (VSEPR theory) with an experimentally determined bond angle of 106.7°. The central nitrogen atom has five outer electrons with an additional electron from each hydrogen atom.