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In which one of the following cases, breaking of covalent bond takes place?

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Important Questions on Chemical Bonding and Molecular Structure

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

The formal charge on central oxygen atom in ozone is

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

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

EASY

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

Valence electrons in the element

A

are

3

and that in element

B

are

6

. Most probable compound formed from

A

and

B

EASY

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

Which of the following molecule does not obey octet rule?

MEDIUM

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

The total number of dative bonds present in all the following

CO, {NH}_{4} Cl, {Al}_{2} {Cl}_{6}, Al {(H_{2} O)}_{6}, {HNO}_{3}

and

{CO}_{2}

EASY

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

Which among the following is an electron deficient compound ?

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

Which of the following pair contains

2

lone pair of electrons on the central atom?

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

The oxide which contains an odd electron at the nitrogen atom is

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

The sum of the number of dative bonds present in all the given species are;

{Al}_{2} {Cl}_{6}, Al {(H_{2} O)}_{6}, CO, {NH}_{4}^{+}

EASY

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

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

EASY

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

The ion that is isoelectronic with

CO

EASY

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

Nitrogen shows maximum covalency of

4

where as other heavier elements of the group show higher covalency because.

MEDIUM

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

Which of the following species is a radical?

MEDIUM

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

Which of the following represents the most stable Lewis dot formula for

{CO}_{3}^{2 -}

MEDIUM

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

{PCl}_{5}

is well known but

{NCl}_{5}

is not.Because,

EASY

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

Amongst

{SF}_{4}, {XeF}_{4}, {CH}_{4}

and

H_{2} O

, the number of species with two lone pairs of electrons at central atom is

MEDIUM

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

Number of electron deficient molecules among the following

{PH}_{3}, B_{2} H_{6}, {CCl}_{4}, {NH}_{3}, LiH

and

{BCl}_{3}

EASY

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

Total number of lone pair of electrons in

{I_{3}}^{-}

ion is:

MEDIUM

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

The number of co-ordination bonded water molecules associated with

{CuSO}_{4} . 5 H_{2} O

is _______

EASY

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

What is the nature of the bond between

B

and

O

{(C_{2} H_{5})}_{2} {OBH}_{3} ?

In which one of the following cases, breaking of covalent bond takes place?

Important Questions on Chemical Bonding and Molecular Structure

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