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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion $({CO}_{3}^{2 -})$ is
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Which of the following is true?

1 All these structures are in dynamic equilibrium with each other.

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

3

{C O}_{3}^{2 -}

has a single structure i.e., resonance hybrid of the above three structures.

4 Each structure exists for equal amount of time.

Explanation:

${C O}_{3}^{2 -}$ exists as resonance hybrid of the given structures. Resonating structures are hypothetical and resonance hybrid is real structure, which is the average of all the resonating structures.

JEE - 2023

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the $O_{3}$ molecule are intermediate between a single and double bond.
Reason :
Resonance averages the bond characteristics.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

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Thus, $O_{3}$ can be equally represented by structure I and II.Thus resonance in the ozone molecule averages its bond characteristics. So Option (1) is correct.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313902 What is not true about resonance?

1 The resonating structures are hypothetical

2 The unpaired electrons in various resonating structure are same

3 Hybrid structure is least stable

4 Hybrid structure is least energetic

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313903 A molecule may be represented by three structures having energies $E_{1}, E_{2} a n d E_{3}$ respectively. The energies of these structures follow the order $E_{3} < E_{2} < E_{1}$ respectively. If the experimental energy of the molecule is $E_{0}$ , the resonance energy is

1

(E_{1} + E_{2} + E_{3}) - E_{0}

2

E_{0} - E_{3}

3

E_{0} - E_{1}

4

E_{0} - E_{2}

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313904 The number of resonating structures possible for ${PO}_{4}^{3 -}$ ion is ____ .

1 1

2 3

3 5

4 4

Explanation:

In phosphate ion $({P O}_{4}^{3 -})$ , four resonating structures are possible.
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion $({CO}_{3}^{2 -})$ is
supporting img

Which of the following is true?

1 All these structures are in dynamic equilibrium with each other.

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

3

{C O}_{3}^{2 -}

has a single structure i.e., resonance hybrid of the above three structures.

4 Each structure exists for equal amount of time.

Explanation:

${C O}_{3}^{2 -}$ exists as resonance hybrid of the given structures. Resonating structures are hypothetical and resonance hybrid is real structure, which is the average of all the resonating structures.

JEE - 2023

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the $O_{3}$ molecule are intermediate between a single and double bond.
Reason :
Resonance averages the bond characteristics.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

supporting img
Thus, $O_{3}$ can be equally represented by structure I and II.Thus resonance in the ozone molecule averages its bond characteristics. So Option (1) is correct.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313902 What is not true about resonance?

1 The resonating structures are hypothetical

2 The unpaired electrons in various resonating structure are same

3 Hybrid structure is least stable

4 Hybrid structure is least energetic

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313903 A molecule may be represented by three structures having energies $E_{1}, E_{2} a n d E_{3}$ respectively. The energies of these structures follow the order $E_{3} < E_{2} < E_{1}$ respectively. If the experimental energy of the molecule is $E_{0}$ , the resonance energy is

1

(E_{1} + E_{2} + E_{3}) - E_{0}

2

E_{0} - E_{3}

3

E_{0} - E_{1}

4

E_{0} - E_{2}

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313904 The number of resonating structures possible for ${PO}_{4}^{3 -}$ ion is ____ .

1 1

2 3

3 5

4 4

Explanation:

In phosphate ion $({P O}_{4}^{3 -})$ , four resonating structures are possible.
supporting img

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion $({CO}_{3}^{2 -})$ is
supporting img

Which of the following is true?

1 All these structures are in dynamic equilibrium with each other.

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

3

{C O}_{3}^{2 -}

has a single structure i.e., resonance hybrid of the above three structures.

4 Each structure exists for equal amount of time.

Explanation:

${C O}_{3}^{2 -}$ exists as resonance hybrid of the given structures. Resonating structures are hypothetical and resonance hybrid is real structure, which is the average of all the resonating structures.

JEE - 2023

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the $O_{3}$ molecule are intermediate between a single and double bond.
Reason :
Resonance averages the bond characteristics.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

supporting img
Thus, $O_{3}$ can be equally represented by structure I and II.Thus resonance in the ozone molecule averages its bond characteristics. So Option (1) is correct.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313902 What is not true about resonance?

1 The resonating structures are hypothetical

2 The unpaired electrons in various resonating structure are same

3 Hybrid structure is least stable

4 Hybrid structure is least energetic

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313903 A molecule may be represented by three structures having energies $E_{1}, E_{2} a n d E_{3}$ respectively. The energies of these structures follow the order $E_{3} < E_{2} < E_{1}$ respectively. If the experimental energy of the molecule is $E_{0}$ , the resonance energy is

1

(E_{1} + E_{2} + E_{3}) - E_{0}

2

E_{0} - E_{3}

3

E_{0} - E_{1}

4

E_{0} - E_{2}

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313904 The number of resonating structures possible for ${PO}_{4}^{3 -}$ ion is ____ .

1 1

2 3

3 5

4 4

Explanation:

In phosphate ion $({P O}_{4}^{3 -})$ , four resonating structures are possible.
supporting img

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion $({CO}_{3}^{2 -})$ is
supporting img

Which of the following is true?

1 All these structures are in dynamic equilibrium with each other.

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

3

{C O}_{3}^{2 -}

has a single structure i.e., resonance hybrid of the above three structures.

4 Each structure exists for equal amount of time.

Explanation:

${C O}_{3}^{2 -}$ exists as resonance hybrid of the given structures. Resonating structures are hypothetical and resonance hybrid is real structure, which is the average of all the resonating structures.

JEE - 2023

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the $O_{3}$ molecule are intermediate between a single and double bond.
Reason :
Resonance averages the bond characteristics.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

supporting img
Thus, $O_{3}$ can be equally represented by structure I and II.Thus resonance in the ozone molecule averages its bond characteristics. So Option (1) is correct.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313902 What is not true about resonance?

1 The resonating structures are hypothetical

2 The unpaired electrons in various resonating structure are same

3 Hybrid structure is least stable

4 Hybrid structure is least energetic

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313903 A molecule may be represented by three structures having energies $E_{1}, E_{2} a n d E_{3}$ respectively. The energies of these structures follow the order $E_{3} < E_{2} < E_{1}$ respectively. If the experimental energy of the molecule is $E_{0}$ , the resonance energy is

1

(E_{1} + E_{2} + E_{3}) - E_{0}

2

E_{0} - E_{3}

3

E_{0} - E_{1}

4

E_{0} - E_{2}

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313904 The number of resonating structures possible for ${PO}_{4}^{3 -}$ ion is ____ .

1 1

2 3

3 5

4 4

Explanation:

In phosphate ion $({P O}_{4}^{3 -})$ , four resonating structures are possible.
supporting img

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion $({CO}_{3}^{2 -})$ is
supporting img

Which of the following is true?

1 All these structures are in dynamic equilibrium with each other.

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

3

{C O}_{3}^{2 -}

has a single structure i.e., resonance hybrid of the above three structures.

4 Each structure exists for equal amount of time.

Explanation:

${C O}_{3}^{2 -}$ exists as resonance hybrid of the given structures. Resonating structures are hypothetical and resonance hybrid is real structure, which is the average of all the resonating structures.

JEE - 2023

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the $O_{3}$ molecule are intermediate between a single and double bond.
Reason :
Resonance averages the bond characteristics.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

supporting img
Thus, $O_{3}$ can be equally represented by structure I and II.Thus resonance in the ozone molecule averages its bond characteristics. So Option (1) is correct.

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313902 What is not true about resonance?

1 The resonating structures are hypothetical

2 The unpaired electrons in various resonating structure are same

3 Hybrid structure is least stable

4 Hybrid structure is least energetic

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313903 A molecule may be represented by three structures having energies $E_{1}, E_{2} a n d E_{3}$ respectively. The energies of these structures follow the order $E_{3} < E_{2} < E_{1}$ respectively. If the experimental energy of the molecule is $E_{0}$ , the resonance energy is

1

(E_{1} + E_{2} + E_{3}) - E_{0}

2

E_{0} - E_{3}

3

E_{0} - E_{1}

4

E_{0} - E_{2}

CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313904 The number of resonating structures possible for ${PO}_{4}^{3 -}$ ion is ____ .

1 1

2 3

3 5

4 4

Explanation:

In phosphate ion $({P O}_{4}^{3 -})$ , four resonating structures are possible.
supporting img