Comparision of Valence Bond Theory and Molecular Orbital Theory
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313767 Match List-I (Molecules) with List-II (Bond order) and select the correct answer using the codes.

Column IColumn II
A. \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)P. \({\rm{3}}\)
B. \({{\rm{N}}_{\rm{2}}}\)Q. \({\rm{1.5}}\)
C. \({\rm{B}}{{\rm{e}}_{\rm{2}}}\)R. \({\rm{1}}\)
D. \({{\rm{O}}_{\rm{2}}}\)S. \({\rm{0}}\)
T. \({\rm{2}}\)

1 \(\mathrm{A}-\mathrm{Q}, \quad \mathrm{B}-\mathrm{R}, \quad \mathrm{C}-\mathrm{P}, \quad \mathrm{D}-\mathrm{S}\)
2 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{T}\)
3 \(\mathrm{A}-\mathrm{S}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{E}\)
4 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{Q}, \quad \mathrm{C}-\mathrm{T}, \quad \mathrm{D}-\mathrm{P}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313724 Identify a molecule which does not exist.

1 \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)
2 \({{\rm{C}}_{\rm{2}}}\)
3 \({{\rm{O}}_{\rm{2}}}\)
4 \({\rm{H}}{{\rm{e}}_{\rm{2}}}\)
NEET - 2020
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313725 The correct order of energies of molecular orbitals of \(\mathrm{N}_{2}\) molecule, is

1 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\(\left( {\pi \,{\text{2}}{{\text{p}}_{\text{x}}}{\text{ }} = {\text{ }}\pi \,{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\text{ }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < {\text{ }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
2 \(\sigma {\text{1s}} < {\sigma ^{\text{*}}}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^{\text{*}}}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\({\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}} = \pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right)\)
3 \(\sigma 1{\text{s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < {\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
4 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\sigma {\text{2}}{{\text{p}}_{\text{z}}}{\text{ < }}\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right){\text{ < }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313726 In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one?

1 \({{\rm{O}}_2} \to {\rm{O}}_2^ + \)
2 \({\rm{NO}} \to {\rm{N}}{{\rm{O}}^ + }\)
3 \({{\rm{O}}_2} \to {\rm{O}}_2^{2 - }\)
4 \({{\rm{N}}_2} \to {\rm{N}}_2^ + \)
JEE - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313727 Which statement is correct about \(\mathrm{O}_{2}^{+}\)?

1 Paramagnetic and bond order \( < \mathrm{O}_{2}\)
2 Paramagnetic and bond order \(>\mathrm{O}_{2}\)
3 Diamagnetic and bond order \( < \mathrm{O}_{2}\)
4 Diamagnetic and bond order \(>\mathrm{O}_{2}\)
NEET DIGITAL LIBRARY
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313767 Match List-I (Molecules) with List-II (Bond order) and select the correct answer using the codes.

Column IColumn II
A. \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)P. \({\rm{3}}\)
B. \({{\rm{N}}_{\rm{2}}}\)Q. \({\rm{1.5}}\)
C. \({\rm{B}}{{\rm{e}}_{\rm{2}}}\)R. \({\rm{1}}\)
D. \({{\rm{O}}_{\rm{2}}}\)S. \({\rm{0}}\)
T. \({\rm{2}}\)

1 \(\mathrm{A}-\mathrm{Q}, \quad \mathrm{B}-\mathrm{R}, \quad \mathrm{C}-\mathrm{P}, \quad \mathrm{D}-\mathrm{S}\)
2 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{T}\)
3 \(\mathrm{A}-\mathrm{S}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{E}\)
4 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{Q}, \quad \mathrm{C}-\mathrm{T}, \quad \mathrm{D}-\mathrm{P}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313724 Identify a molecule which does not exist.

1 \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)
2 \({{\rm{C}}_{\rm{2}}}\)
3 \({{\rm{O}}_{\rm{2}}}\)
4 \({\rm{H}}{{\rm{e}}_{\rm{2}}}\)
NEET - 2020
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313725 The correct order of energies of molecular orbitals of \(\mathrm{N}_{2}\) molecule, is

1 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\(\left( {\pi \,{\text{2}}{{\text{p}}_{\text{x}}}{\text{ }} = {\text{ }}\pi \,{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\text{ }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < {\text{ }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
2 \(\sigma {\text{1s}} < {\sigma ^{\text{*}}}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^{\text{*}}}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\({\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}} = \pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right)\)
3 \(\sigma 1{\text{s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < {\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
4 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\sigma {\text{2}}{{\text{p}}_{\text{z}}}{\text{ < }}\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right){\text{ < }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313726 In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one?

1 \({{\rm{O}}_2} \to {\rm{O}}_2^ + \)
2 \({\rm{NO}} \to {\rm{N}}{{\rm{O}}^ + }\)
3 \({{\rm{O}}_2} \to {\rm{O}}_2^{2 - }\)
4 \({{\rm{N}}_2} \to {\rm{N}}_2^ + \)
JEE - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313727 Which statement is correct about \(\mathrm{O}_{2}^{+}\)?

1 Paramagnetic and bond order \( < \mathrm{O}_{2}\)
2 Paramagnetic and bond order \(>\mathrm{O}_{2}\)
3 Diamagnetic and bond order \( < \mathrm{O}_{2}\)
4 Diamagnetic and bond order \(>\mathrm{O}_{2}\)
Join With Us for More Updates
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313767 Match List-I (Molecules) with List-II (Bond order) and select the correct answer using the codes.

Column IColumn II
A. \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)P. \({\rm{3}}\)
B. \({{\rm{N}}_{\rm{2}}}\)Q. \({\rm{1.5}}\)
C. \({\rm{B}}{{\rm{e}}_{\rm{2}}}\)R. \({\rm{1}}\)
D. \({{\rm{O}}_{\rm{2}}}\)S. \({\rm{0}}\)
T. \({\rm{2}}\)

1 \(\mathrm{A}-\mathrm{Q}, \quad \mathrm{B}-\mathrm{R}, \quad \mathrm{C}-\mathrm{P}, \quad \mathrm{D}-\mathrm{S}\)
2 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{T}\)
3 \(\mathrm{A}-\mathrm{S}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{E}\)
4 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{Q}, \quad \mathrm{C}-\mathrm{T}, \quad \mathrm{D}-\mathrm{P}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313724 Identify a molecule which does not exist.

1 \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)
2 \({{\rm{C}}_{\rm{2}}}\)
3 \({{\rm{O}}_{\rm{2}}}\)
4 \({\rm{H}}{{\rm{e}}_{\rm{2}}}\)
NEET - 2020
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313725 The correct order of energies of molecular orbitals of \(\mathrm{N}_{2}\) molecule, is

1 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\(\left( {\pi \,{\text{2}}{{\text{p}}_{\text{x}}}{\text{ }} = {\text{ }}\pi \,{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\text{ }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < {\text{ }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
2 \(\sigma {\text{1s}} < {\sigma ^{\text{*}}}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^{\text{*}}}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\({\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}} = \pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right)\)
3 \(\sigma 1{\text{s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < {\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
4 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\sigma {\text{2}}{{\text{p}}_{\text{z}}}{\text{ < }}\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right){\text{ < }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313726 In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one?

1 \({{\rm{O}}_2} \to {\rm{O}}_2^ + \)
2 \({\rm{NO}} \to {\rm{N}}{{\rm{O}}^ + }\)
3 \({{\rm{O}}_2} \to {\rm{O}}_2^{2 - }\)
4 \({{\rm{N}}_2} \to {\rm{N}}_2^ + \)
JEE - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313727 Which statement is correct about \(\mathrm{O}_{2}^{+}\)?

1 Paramagnetic and bond order \( < \mathrm{O}_{2}\)
2 Paramagnetic and bond order \(>\mathrm{O}_{2}\)
3 Diamagnetic and bond order \( < \mathrm{O}_{2}\)
4 Diamagnetic and bond order \(>\mathrm{O}_{2}\)
For More Updates join with Us
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313767 Match List-I (Molecules) with List-II (Bond order) and select the correct answer using the codes.

Column IColumn II
A. \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)P. \({\rm{3}}\)
B. \({{\rm{N}}_{\rm{2}}}\)Q. \({\rm{1.5}}\)
C. \({\rm{B}}{{\rm{e}}_{\rm{2}}}\)R. \({\rm{1}}\)
D. \({{\rm{O}}_{\rm{2}}}\)S. \({\rm{0}}\)
T. \({\rm{2}}\)

1 \(\mathrm{A}-\mathrm{Q}, \quad \mathrm{B}-\mathrm{R}, \quad \mathrm{C}-\mathrm{P}, \quad \mathrm{D}-\mathrm{S}\)
2 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{T}\)
3 \(\mathrm{A}-\mathrm{S}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{E}\)
4 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{Q}, \quad \mathrm{C}-\mathrm{T}, \quad \mathrm{D}-\mathrm{P}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313724 Identify a molecule which does not exist.

1 \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)
2 \({{\rm{C}}_{\rm{2}}}\)
3 \({{\rm{O}}_{\rm{2}}}\)
4 \({\rm{H}}{{\rm{e}}_{\rm{2}}}\)
NEET - 2020
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313725 The correct order of energies of molecular orbitals of \(\mathrm{N}_{2}\) molecule, is

1 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\(\left( {\pi \,{\text{2}}{{\text{p}}_{\text{x}}}{\text{ }} = {\text{ }}\pi \,{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\text{ }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < {\text{ }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
2 \(\sigma {\text{1s}} < {\sigma ^{\text{*}}}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^{\text{*}}}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\({\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}} = \pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right)\)
3 \(\sigma 1{\text{s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < {\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
4 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\sigma {\text{2}}{{\text{p}}_{\text{z}}}{\text{ < }}\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right){\text{ < }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313726 In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one?

1 \({{\rm{O}}_2} \to {\rm{O}}_2^ + \)
2 \({\rm{NO}} \to {\rm{N}}{{\rm{O}}^ + }\)
3 \({{\rm{O}}_2} \to {\rm{O}}_2^{2 - }\)
4 \({{\rm{N}}_2} \to {\rm{N}}_2^ + \)
JEE - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313727 Which statement is correct about \(\mathrm{O}_{2}^{+}\)?

1 Paramagnetic and bond order \( < \mathrm{O}_{2}\)
2 Paramagnetic and bond order \(>\mathrm{O}_{2}\)
3 Diamagnetic and bond order \( < \mathrm{O}_{2}\)
4 Diamagnetic and bond order \(>\mathrm{O}_{2}\)
NEET DIGITAL LIBRARY
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313767 Match List-I (Molecules) with List-II (Bond order) and select the correct answer using the codes.

Column IColumn II
A. \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)P. \({\rm{3}}\)
B. \({{\rm{N}}_{\rm{2}}}\)Q. \({\rm{1.5}}\)
C. \({\rm{B}}{{\rm{e}}_{\rm{2}}}\)R. \({\rm{1}}\)
D. \({{\rm{O}}_{\rm{2}}}\)S. \({\rm{0}}\)
T. \({\rm{2}}\)

1 \(\mathrm{A}-\mathrm{Q}, \quad \mathrm{B}-\mathrm{R}, \quad \mathrm{C}-\mathrm{P}, \quad \mathrm{D}-\mathrm{S}\)
2 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{T}\)
3 \(\mathrm{A}-\mathrm{S}, \quad \mathrm{B}-\mathrm{P}, \quad \mathrm{C}-\mathrm{S}, \quad \mathrm{D}-\mathrm{E}\)
4 \(\mathrm{A}-\mathrm{R}, \quad \mathrm{B}-\mathrm{Q}, \quad \mathrm{C}-\mathrm{T}, \quad \mathrm{D}-\mathrm{P}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313724 Identify a molecule which does not exist.

1 \({\rm{L}}{{\rm{i}}_{\rm{2}}}\)
2 \({{\rm{C}}_{\rm{2}}}\)
3 \({{\rm{O}}_{\rm{2}}}\)
4 \({\rm{H}}{{\rm{e}}_{\rm{2}}}\)
NEET - 2020
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313725 The correct order of energies of molecular orbitals of \(\mathrm{N}_{2}\) molecule, is

1 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\(\left( {\pi \,{\text{2}}{{\text{p}}_{\text{x}}}{\text{ }} = {\text{ }}\pi \,{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\text{ }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < {\text{ }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
2 \(\sigma {\text{1s}} < {\sigma ^{\text{*}}}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^{\text{*}}}{\text{2s}} < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < \)
\({\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}} = \pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right)\)
3 \(\sigma 1{\text{s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}} = {\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right) < \sigma {\text{2}}{{\text{p}}_{\text{z}}} < {\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
4 \(\sigma {\text{1s}} < {\sigma ^*}{\text{1s}} < \sigma {\text{2s}} < {\sigma ^*}{\text{2s}} < \left( {\pi {\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}\pi {\text{2}}{{\text{p}}_{\text{y}}}} \right) < \)
\(\sigma {\text{2}}{{\text{p}}_{\text{z}}}{\text{ < }}\left( {{\pi ^*}{\text{2}}{{\text{p}}_{\text{x}}}{\text{ = }}{\pi ^*}{\text{2}}{{\text{p}}_{\text{y}}}} \right){\text{ < }}{\sigma ^*}{\text{2}}{{\text{p}}_{\text{z}}}\)
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313726 In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one?

1 \({{\rm{O}}_2} \to {\rm{O}}_2^ + \)
2 \({\rm{NO}} \to {\rm{N}}{{\rm{O}}^ + }\)
3 \({{\rm{O}}_2} \to {\rm{O}}_2^{2 - }\)
4 \({{\rm{N}}_2} \to {\rm{N}}_2^ + \)
JEE - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313727 Which statement is correct about \(\mathrm{O}_{2}^{+}\)?

1 Paramagnetic and bond order \( < \mathrm{O}_{2}\)
2 Paramagnetic and bond order \(>\mathrm{O}_{2}\)
3 Diamagnetic and bond order \( < \mathrm{O}_{2}\)
4 Diamagnetic and bond order \(>\mathrm{O}_{2}\)