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Which of these hydrides is the MOST polar: ammonia; methane; #PH_3#; #AsH_3#?

Answer 1

The ammonia molecule is the most polar of the given hydrides.

Nitrogen is much more electronegative than the lower Group atoms. The lone pair on nitrogen is smaller and more charge dense. The result is that ammonia is the most polar molecule. This is also reflected by the high boiling point of the molecule, #"b.p. "-33.3# #""^@C#.

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Answer 2

Peyton Adams

Ammonia (NH3) is the most polar hydride among the options provided.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.