Question

Which of the following orders is correct regarding the boiling points of elements of group 15

Answer 1

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Which of the following orders is correct regarding the boiling points of elements of group 15

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The correct answer should be - PH₃. Although Nitrogen has the lowest molecular weight, it has a free pair of lone electrons that form bonds easily with the hydrogen atoms to form the hydrides. So, it has the highest boiling point amongst the Group 15 elements.

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