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Hydrides of Nitrogen

Select incorr...

Question

Select incorrect statement about hydrides of group 15 elements :

The central atom in the hydride is

s p^{2}

hybridised.

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N H_{3}

readily form

N H_{4}^{+}

salts with

H^{+}; P H_{4}^{+}

salts are formed with

H^{+}

under anhydrous condition.

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The tetrahedron is distorted due to repulsion between the lone pair of electrons and the bond pairs.

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The bond energy of the M-H bond decreases from

N H_{3}

B i H_{3}

because of increase in the size of the element.

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Solution

The correct option is A The central atom in the hydride is $s p^{2}$ hybridised.
Hydrides: The central atom in the hydride is $s p^{3}$ hybridised and all are pyramidal in shape and bond angle decreases down the group due to decrease in bond pair-bond pair repulsion.

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Similar questions

In the Nitrogen family the H - M - H bond angle in the hydrides $M H_{3}$ gradually becomes closer to $90^{\circ}$ on going from N to Sb. This shows that gradually:

Q. Which is/are not correct variation of indicated properties in

N H_{2}^{-}, N H_{3}

and

N H_{4}^{+}

Q. Assertion: The boiling point order of group

15

hydrides is

P H_{3} < A s H_{3} < N H_{3} < S b H_{3} < B i H_{3}

.
Reason:

H

-bonding in

N H_{3}

dominates van der Waals forces in bigger

S b

molecules.

Q. Assertion (A):

N H_{3}

is liquid while the other hydrides of V-A group elements are gases at room temp.
Reason(R):

N H_{3}

possess inter-molecular H -bonds in liquid state

Q. Assertion (A): Stability of

N H_{3}

is greater than

P H_{3}

Reason (R): M - H bond energy increases down the group in the hydrides of pnicogens.

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Select incorrect statement about hydrides of group 15 elements :

The correct option is A The central atom in the hydride is sp2 hybridised.Hydrides: The central atom in the hydride is sp3 hybridised and all are pyramidal in shape and bond angle decreases down the group due to decrease in bond pair-bond pair repulsion.

The correct option is A The central atom in the hydride is $s p^{2}$ hybridised.
Hydrides: The central atom in the hydride is $s p^{3}$ hybridised and all are pyramidal in shape and bond angle decreases down the group due to decrease in bond pair-bond pair repulsion.