Resonance Structures
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion \(\left(\mathrm{CO}_{3}^{2-}\right)\) 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 \({\rm{CO}}_3^{2 - }\) has a single structure i.e., resonance hybrid of the above three structures.
4 Each structure exists for equal amount of time.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the \(\mathrm{O}_{3}\) 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.
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 \({{\rm{E}}_{\rm{1}}}{\rm{,}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{E}}_{\rm{3}}}\) respectively. The energies of these structures follow the order \({{\rm{E}}_{\rm{3}}}{\rm{ < }}{{\rm{E}}_{\rm{2}}}{\rm{ < }}{{\rm{E}}_{\rm{1}}}\) respectively. If the experimental energy of the molecule is \({{\rm{E}}_{\rm{0}}}\), the resonance energy is

1 \(\left( {{{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}{\rm{ + }}{{\rm{E}}_{\rm{3}}}} \right){\rm{ - }}{{\rm{E}}_{\rm{0}}}\)
2 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{3}}}\)
3 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{1}}}\)
4 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{2}}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

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

1 1
2 3
3 5
4 4
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion \(\left(\mathrm{CO}_{3}^{2-}\right)\) 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 \({\rm{CO}}_3^{2 - }\) has a single structure i.e., resonance hybrid of the above three structures.
4 Each structure exists for equal amount of time.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the \(\mathrm{O}_{3}\) 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.
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 \({{\rm{E}}_{\rm{1}}}{\rm{,}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{E}}_{\rm{3}}}\) respectively. The energies of these structures follow the order \({{\rm{E}}_{\rm{3}}}{\rm{ < }}{{\rm{E}}_{\rm{2}}}{\rm{ < }}{{\rm{E}}_{\rm{1}}}\) respectively. If the experimental energy of the molecule is \({{\rm{E}}_{\rm{0}}}\), the resonance energy is

1 \(\left( {{{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}{\rm{ + }}{{\rm{E}}_{\rm{3}}}} \right){\rm{ - }}{{\rm{E}}_{\rm{0}}}\)
2 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{3}}}\)
3 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{1}}}\)
4 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{2}}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

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

1 1
2 3
3 5
4 4
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion \(\left(\mathrm{CO}_{3}^{2-}\right)\) 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 \({\rm{CO}}_3^{2 - }\) has a single structure i.e., resonance hybrid of the above three structures.
4 Each structure exists for equal amount of time.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the \(\mathrm{O}_{3}\) 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.
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 \({{\rm{E}}_{\rm{1}}}{\rm{,}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{E}}_{\rm{3}}}\) respectively. The energies of these structures follow the order \({{\rm{E}}_{\rm{3}}}{\rm{ < }}{{\rm{E}}_{\rm{2}}}{\rm{ < }}{{\rm{E}}_{\rm{1}}}\) respectively. If the experimental energy of the molecule is \({{\rm{E}}_{\rm{0}}}\), the resonance energy is

1 \(\left( {{{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}{\rm{ + }}{{\rm{E}}_{\rm{3}}}} \right){\rm{ - }}{{\rm{E}}_{\rm{0}}}\)
2 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{3}}}\)
3 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{1}}}\)
4 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{2}}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

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

1 1
2 3
3 5
4 4
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion \(\left(\mathrm{CO}_{3}^{2-}\right)\) 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 \({\rm{CO}}_3^{2 - }\) has a single structure i.e., resonance hybrid of the above three structures.
4 Each structure exists for equal amount of time.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the \(\mathrm{O}_{3}\) 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.
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 \({{\rm{E}}_{\rm{1}}}{\rm{,}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{E}}_{\rm{3}}}\) respectively. The energies of these structures follow the order \({{\rm{E}}_{\rm{3}}}{\rm{ < }}{{\rm{E}}_{\rm{2}}}{\rm{ < }}{{\rm{E}}_{\rm{1}}}\) respectively. If the experimental energy of the molecule is \({{\rm{E}}_{\rm{0}}}\), the resonance energy is

1 \(\left( {{{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}{\rm{ + }}{{\rm{E}}_{\rm{3}}}} \right){\rm{ - }}{{\rm{E}}_{\rm{0}}}\)
2 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{3}}}\)
3 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{1}}}\)
4 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{2}}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

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

1 1
2 3
3 5
4 4
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313900 Resonance in carbonate ion \(\left(\mathrm{CO}_{3}^{2-}\right)\) 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 \({\rm{CO}}_3^{2 - }\) has a single structure i.e., resonance hybrid of the above three structures.
4 Each structure exists for equal amount of time.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313901 Assertion :
The oxygen-oxygen bonds in the \(\mathrm{O}_{3}\) 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.
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 \({{\rm{E}}_{\rm{1}}}{\rm{,}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{E}}_{\rm{3}}}\) respectively. The energies of these structures follow the order \({{\rm{E}}_{\rm{3}}}{\rm{ < }}{{\rm{E}}_{\rm{2}}}{\rm{ < }}{{\rm{E}}_{\rm{1}}}\) respectively. If the experimental energy of the molecule is \({{\rm{E}}_{\rm{0}}}\), the resonance energy is

1 \(\left( {{{\rm{E}}_{\rm{1}}}{\rm{ + }}{{\rm{E}}_{\rm{2}}}{\rm{ + }}{{\rm{E}}_{\rm{3}}}} \right){\rm{ - }}{{\rm{E}}_{\rm{0}}}\)
2 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{3}}}\)
3 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{1}}}\)
4 \({{\rm{E}}_{\rm{0}}}{\rm{ - }}{{\rm{E}}_{\rm{2}}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

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

1 1
2 3
3 5
4 4