Match the compound given in column I with the shape given in column II and mark the correct option. Column-I Column-II (A) XeF 6 (i) distorted octahedral (B) XeO 3 (ii) square planar (C) XeOF 4 (iii) pyramidal (D) XeF 4 (iv) square pyramidal

(A) (B) (C) (D) (i) (iii) (iv) (ii)

(A) (B) (C) (D) (iv) (i) (ii) (iii)

(A) (B) (C) (D) (i) (ii) (iv) (iii)

(A) (B) (C) (D) (iv) (iii) (i) (ii)

The formation of the oxide ion, O 2 - ( g ) , from oxygen atom requires first an exothermic and then an endothermic step as shown in below: O g + e - ⟶ O - g ; Δ f H ⊖ = - 141 k J m o l - 1 O - g + e - ⟶ O 2 - g ; Δ f H ⊖ = + 780 k J m o l - 1 Thus process of formation of O 2 - in gas phase is unfavourable though O 2 - is isoelectronic with neon. It is due to the fact that,

Electron repulsion outweighs the stability gained by achieving noble gas configuration.

O - Ion has comparatively smaller size than oxygen atom.

Oxygen is more electronegative.

Addition of electron in oxygen results in larger size of the ion.

E M B I B E

Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 71

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Earn 100

Maximum bond angle at nitrogen is present in which of the following?

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Important Questions on Chemical Bonding and Molecular Structure

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Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 72

Which of the following species contains equal number of

σ

-and

π

-bonds?

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Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 73

Predict the correct order among the following:

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Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 74

Consider the molecules

{CH}_{4}, {NH}_{3}

and

H_{2} O

. Which of the given statement is false ?

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Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 75

Match the compound given in column I with the shape given in column II and mark the correct option.

	Column-I		Column-II
(A)	${XeF}_{6}$	(i)	distorted octahedral
(B)	${XeO}_{3}$	(ii)	square planar
(C)	${XeOF}_{4}$	(iii)	pyramidal
(D)	${XeF}_{4}$	(iv)	square pyramidal

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Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 76

Which one of the following compounds shows the presence of intramolecular hydrogen bond?

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Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 77

The hybridisation of atomic orbitals of nitrogen in

{NO}_{2}^{+}, {NO}_{3}^{-}

and

{NH}_{4}^{+}

, respectively are:

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Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 78

Which of the following pairs of ions is isoelectronic and isostructural?

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Alpha Question Bank for Medical: Chemistry>Chapter 13 - Chemical Bonding and Molecular Structure>Exercise 4>Q 79

The correct geometry and hybridization for

{XeF}_{4}

are

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