Why bond angle in NH3 and H2O is larger than bond angle in H2S

In NH3, nbsp;H2O and H2S, Nitrogen , oxygen nbsp;and sulphur nbsp;respectively nbsp;undergo sp3 hybridisation forming four hybrid orbitals. The expect ...

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Byju's Answer

Standard XII

Chemistry

Nitrogen

why bond angl...

Question

why bond angle in NH₃ and H₂O is larger than bond angle in H₂S

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Solution

In NH_3,H₂O and H₂S, Nitrogen , oxygen and sulphur respectively undergo sp³ hybridisation forming four hybrid orbitals. The expected bond angle is 109^o28'.
In case of O and S, oxygen is smaller in size than sulphur and is highly electronegative, the bond pairs are closer to O atom and hence the repulsion between them are large. As we move dowm to S, electronegativity decreases due to which the bond pairs move away from the central atom. Hence the repulsions between the bond pairs decrease, so the bond angle also decreases.

Same is the case with NH₃ and H₂S. Bond angle of NH₃ is larger than H₂S, because N is smaller than S and also it is more electronegative than S.

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Similar questions

Consider the molecules $C H_{4}$ , $N H_{3}$ and $H_{2} O$ . Which of the given statements is false?

Q. Why is the

H - O - H

bond angle in

H_{2} O

smaller than

H - N - H

bond angle in

N H_{3}

Q. Bond angles in

N H_{3}

and

H_{2} O

are :

Q. Bond angle in

H_{2} O

(104.5

^{\circ}

) is higher than the bond angle of

H_{2} S

(92.1

^{\circ}

). The difference is due to:

Q. For,

H_{2} O

the bond angle is

{104.5}^{\circ}

and for

H_{2} S

the bond angle is

{92.1}^{\circ}

.
Difference in bond angle is due to :

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why bond angle in NH3 and H2O is larger than bond angle in H2S

why bond angle in NH₃ and H₂O is larger than bond angle in H₂S