For the molecules containing hydrogen, neither the electronegativity nor the size
argument works well. NH3 should have the largest angle in the series of nitrogen compounds
based on the electronegativity argument and the smallest angle based on the size
argument; instead, it has nearly the same angle as NC13. Similar problems are found for
H20, H2S, pH3, AsH3, and SbH3. The two effects seem to counterbalance each other,
resulting in the intermediate angles.
For the molecules containing hydrogen, neither the electronegativity nor the sizeargument works well. NH3 should have the largest angle in the series of nitrogen compoundsbased on the electronegativity argument and the smallest angle based on the sizeargument; instead, it has nearly the same angle as NC13. Similar problems are found forH20, H2S, pH3, AsH3, and SbH3. The two effects seem to counterbalance each other,resulting in the intermediate angles.
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