The bond lengths (in pm ) of C - C , C ≡ C and C = C are:

C - C C ≡ C C = C 154 120 133

C - C C ≡ C C = C 120 154 133

C - C C ≡ C C = C 154 120 139

C - C C ≡ C C = C 140 133 139

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Silane is unstable whereas methane is quite stable, which of the following provides the reason?

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Important Questions on Chemical Bonding & Molecular Structure

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

How many ions of the following have a bond order of $2.5 ?$

$N_{2}^{-}; {NO}^{-}; C_{2}^{-}; N_{2}^{+}; C_{2}^{2 -}; {CN}^{+}$

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

The intermolecular potential energy for the molecules

A

B

C

and

D

given below suggests that:
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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

Average bond enthalpy of water is

464 \cdot 5 kJ {mol}^{- 1}

. If the energy required to break first

O - H

bond is

502 kJ {mol}^{- 1}

, how much energy per mol is required to break second

O - H

bond ?

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

In which of the following the

C - H

bond distance is the longest?

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

The number of bonds between sulphur and oxygen atoms in

S_{2} O_{8}^{2 -}

and the number of bonds between sulphur and sulphur atoms in rhombic sulphur, respectively are:

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

The bond lengths (in $pm)$ of $C - C, C \equiv C$ and $C = C$ are:

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

The compound that has the largest

H - M - H

bond angle

(M = N, O, S, C)

, is :

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

Which of the following molecules has shortest

C - C

bond length?

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

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

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

The number of

π

-bonds and

σ

-bonds present in naphthalene are respectively

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

Among the following species, the

H - X - H

angle (

X = B, N

P

) follows the order.

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

If enthalpy of atomization for

B r_{2} (l)

x k J / m o l

and bond enthalpy for

B r_{2}

y k J / m o l

, the relation between them

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

Pick the INCORRECT statement among those given below

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

Bond lengths (in

pm

) of

C - H, C - C, C = C

and

C \equiv C

bonds, respectively are:

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

The correct order of bond dissociation enthalpy of halogens is:

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

In gaseous triethyl amine the

" - C - N - C - "

bond angle is

____

degree.

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

Which of the following compounds has highest

C - X

bond strength?

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

The correct order of

C - O

bond length is:

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

Arrange the following compounds in increasing order of

C - O H

bond length: methanol, phenol,

p

-ethoxyphenol

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Chemistry>Inorganic Chemistry>Chemical Bonding & Molecular Structure>Bond Parameters

Among the following molecules, the one with the largest bond angle at the central atom is

Silane is unstable whereas methane is quite stable, which of the following provides the reason?

Important Questions on Chemical Bonding & Molecular Structure

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