Question

Explain the trend of boiling point of hydrides of Group 15 element.

Answer 1

Answer:

other hydrides hae higher van-der wall forces.

Most basic is ammonia because of highest electron density on nitrogen.

Highest bond angle is in ammonia as nitrogen has highest electron density , repulsion between lone pairs and bond pairs will be more resulting into more bond angle due to small size of nitrogen.

Answer 2

Answer:

Boiling points of the elements increases down the group mainly because the mass increases. Melting point on the other hand depends on the energy required to overcome the inter-molecular interactions and break the vanderwall forces between the molecules.

Explanation:

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