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Factors Affected by Hydrogen Bonding

Bond angle in...

Question

Bond angle in is higher than that in PH₃. Why?

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Solution

In PH₃, P is sp³ hybridized. Three orbitals are involved in bonding with three hydrogen atoms and the fourth one contains a lone pair. As lone pair-bond pair repulsion is stronger than bond pair-bond pair repulsion, the tetrahedral shape associated with sp³ bonding is changed to pyramidal. PH₃ combines with a proton to form in which the lone pair is absent. Due to the absence of lone pair in, there is no lone pair-bond pair repulsion. Hence, the bond angle in is higher than the bond angle in PH₃.

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Similar questions

H - N - H

N H_{3}

H - P - H

P H_{3}

.

Q. Explain why bond angle of

N H_{3}

is greater than

N F_{3}

while bond angle of

P H_{3}

is less than that of

P F_{3}

Q. Why bond angle of

N H_{3}

is greater bond angle of

P H_{3}

The bond angle in PH₃ is:

H - N - H

N H_{3}

H - P - H

P H_{3}

.

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Factors Affected by Hydrogen Bonding

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