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Multiple Bond Formation

NH3 Ammonia h...

Question

$N H_{3}$ (Ammonia) has __________shape.

A

rectangular

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B

pyramidal

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C

trigonal-bi-pyramidal

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D

planar

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Solution

The correct option is B pyramidal
Ammonia has triogonal pyramidal shape and the nitrogen in ammonia undergoes $S P^{3}$ hybridization.
Hence option B is correct.

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Similar questions

Q. A molecule of ammonia

(N H_{3})

Q. Which of the following species has a molecular shape similar to that of ammonia,

{N H}_{3}

?

(N H_{3})

obtained from different sources always has same proportion of Nitrogen and Hydrogen. It proves the validity of law of _______________.

Q. Explain the following:
(i) The source of heat is removed after sometime after sometime in Haber's process.
(ii) ammonium nitrate is not used in the laboratory preparation of NH₃.
(iii) Ca(OH)₂ is preferred over NaOH in the preparation of ammonia.
(iv) Liquid NH₃ has no action on litmus, while liquor NH₃ has an effect.
(v) Dry N₂ and H₂ must be used in the Haber's process.
(vi) A promoter is added along the catalyst in the Haber's process.
(vii) Aqueous ammonia conducts electricity.
(viii) Ammonia cannot be collected over water.
(ix) Ammonia is present in sewage water.
(x) Ammonia solution is used in the laboratory to identify metal ions.

Q. In solid ammonia, each

{N H}_{3}

molecule has six other

{N H}_{3}

molecules as nearest neighbours.

Δ H

of sublimation of

{N H}_{3}

at the melting point is

30.8 k J

{m o l}^{- 1}

and the estimated

Δ H

of sublimation in the absence of hydrogen bonding is

14.4 k J

{m o l}^{- 1}

. What is the strength of hydrogen bond in solid ammonia in

k J

{m o l}^{- 1}

? Give your answer in nearest integer number.

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