Question

Silane (SiH₄), phosphorus trichloride (PCl₃), and nitrous oxide (N₂O) melt at

−185°C, −112°C, and −91°C,

respectively. What does this suggest about the polar character and intermolecular attractions of the three compounds?

As the melting points increase from

−185°C (silane) to −91°C (nitrous oxide),

the molecules become  ---Select--- more less polar and the intermolecular attractions  ---Select--- weaken strengthen .

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Answer 1