B - F bond in BF 3 is stronger than in BF 4 - . Why ?

BF 3 bonds are partial double bond character.

BF 4 - Bonds are partial double bond character.

B - F bond in BF 3 is stronger than in BF 4 - . Why ?

BF 3 bonds are partial double bond character.

Resonance in carbonate ion CO 3 2 - is Which of the following is true?

CO 3 2 - has a single structure i.e., resonance hybrid of the above three structures.

It is possible to identify each structure individually by some physical or chemical method.

All these structures are in dynamic equilibrium with each other.

Each structure exists for equal amount of time.

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B - F bond in BF₃ is stronger than in ${BF}_{4}^{-}$ . Why ?

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Important Questions on Chemical Bonding and Molecular Structure

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

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

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

The compound(s) with two lone pairs of electrons on the central atom is (are)

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

The numbers of lone pair and bond pairs in hydrazine are, respectively:

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

Total number of lone pair of electrons in

{I_{3}}^{-}

ion is:

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

Enthalpy of hydrogenation of one mole of benzene to cyclohexane is
[Resonance energy of benzene

= - 150.4 kJ /

mole .

Enthalpy of hydrogenation of cyclohexene

= - 119.5 kJ /

mole

]

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Which of the following compounds contain(s) no covalent bond(s)?

KCl, {PH}_{3}, O_{2}, B_{2} H_{6}, H_{2} {SO}_{4}

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

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

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

Arrange the following compounds in increasing order of

C - O H

bond length: methanol, phenol,

p

-ethoxyphenol

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

Which statement is true?

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

Resonance in carbonate ion $({CO}_{3}^{2 -})$ is

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Which of the following is true?

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

Give a reason for the following:

Ionic compounds have a high melting point.

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The molecule/molecules that has/have delocalised lone pair(s) of electrons is/are

Question Image

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

What do you understand by a lone pair of electrons?

HARD

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

The lattice energies of

NaCl, NaF, KCl

and

RbCl

follow the order

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

In ozone molecule, the formal charge on the central oxygen atom is

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

Which of the following pair contains

2

lone pair of electrons on the central atom?

EASY

Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

The number of

π

-bonds and

σ

-bonds present in naphthalene are respectively

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

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The above compound represents hydrogen azide, the bond orders of bonds $(I)$ and $(II)$ are:

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

Which of the following compounds does not exhibit resonance ?

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Chemistry>Inorganic Chemistry>Chemical Bonding and Molecular Structure>Resonance

The compound having longest

C - Cl

bond is:

B - F bond in BF3 is stronger than in BF 4 - . Why ?

Important Questions on Chemical Bonding and Molecular Structure

Learn and Prepare for any exam you want !

B - F bond in BF₃ is stronger than in ${BF}_{4}^{-}$ . Why ?