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

313770 In forming (i) \({{\rm{N}}_{\rm{2}}} \to {\rm{N}}_{\rm{2}}^{\rm{ + }}\) and (ii) \({{\rm{O}}_{\rm{2}}} \to {\rm{O}}_{\rm{2}}^{\rm{ + }}\); the electrons respectively are removed from

1 \(\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\)
2 \(\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\)
3 \(\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\)
4 \(\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313771 The decreasing order of bond length for \({{\rm{N}}_{\rm{2}}}\) and its ions is correctly shown in

1 \({{\rm{N}}_{\rm{2}}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ = N}}_{\rm{2}}^{\rm{ + }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ = N}}_{\rm{2}}^{{\rm{2 + }}}\)
2 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ = N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ = N}}_{\rm{2}}^{\rm{ + }}{\rm{ > }}{{\rm{N}}_{\rm{2}}}\)
3 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{{\rm{1 + }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 + }}}{\rm{ > }}{{\rm{N}}_{\rm{2}}}\)
4 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ > }}{{\rm{N}}_{\rm{2}}}{\rm{ > N}}_{\rm{2}}^{\rm{ + }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 + }}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313772 What is the effect of the following processes on the bond order in \({{\rm{N}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{O}}_{\rm{2}}}\) ?
i) \({{\rm{N}}_{\rm{2}}} \to {\rm{N}}_{\rm{2}}^{\rm{ + }}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)
ii) \({{\rm{O}}_{\rm{2}}} \to {\rm{O}}_{\rm{2}}^{\rm{ + }}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)

1 Decreases in both (i) & (ii)
2 Increases in both (i) & (ii)
3 Increases in (i) but decreases in (ii)
4 Decreases in (i) but increases in (ii)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313773 Consider the following statements
I. When \({{\rm{O}}_{\rm{2}}}\) is converted into \({\rm{O}}_{\rm{2}}^{{\rm{2 + }}}\) bond order decreases.
II. \({{\rm{O}}_{\rm{2}}}\) molecule is paramagnetic because it contains two unpaired electrons in \({{\rm{\pi }}^{\rm{*}}}\,{\rm{2}}{{\rm{p}}_{\rm{x}}}\) and \({{\rm{\pi }}^{\rm{*}}}\,{\rm{2}}{{\rm{p}}_{\rm{y}}}\). molecular orbitals.
III. The bond length in NO is greater than in \({\rm{N}}{{\rm{O}}^{\rm{ + }}}\).
Choose the correct statements.

1 Only I
2 I and II
3 II and III
4 II and IV
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313770 In forming (i) \({{\rm{N}}_{\rm{2}}} \to {\rm{N}}_{\rm{2}}^{\rm{ + }}\) and (ii) \({{\rm{O}}_{\rm{2}}} \to {\rm{O}}_{\rm{2}}^{\rm{ + }}\); the electrons respectively are removed from

1 \(\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\)
2 \(\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\)
3 \(\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\)
4 \(\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313771 The decreasing order of bond length for \({{\rm{N}}_{\rm{2}}}\) and its ions is correctly shown in

1 \({{\rm{N}}_{\rm{2}}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ = N}}_{\rm{2}}^{\rm{ + }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ = N}}_{\rm{2}}^{{\rm{2 + }}}\)
2 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ = N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ = N}}_{\rm{2}}^{\rm{ + }}{\rm{ > }}{{\rm{N}}_{\rm{2}}}\)
3 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{{\rm{1 + }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 + }}}{\rm{ > }}{{\rm{N}}_{\rm{2}}}\)
4 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ > }}{{\rm{N}}_{\rm{2}}}{\rm{ > N}}_{\rm{2}}^{\rm{ + }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 + }}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313772 What is the effect of the following processes on the bond order in \({{\rm{N}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{O}}_{\rm{2}}}\) ?
i) \({{\rm{N}}_{\rm{2}}} \to {\rm{N}}_{\rm{2}}^{\rm{ + }}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)
ii) \({{\rm{O}}_{\rm{2}}} \to {\rm{O}}_{\rm{2}}^{\rm{ + }}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)

1 Decreases in both (i) & (ii)
2 Increases in both (i) & (ii)
3 Increases in (i) but decreases in (ii)
4 Decreases in (i) but increases in (ii)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313773 Consider the following statements
I. When \({{\rm{O}}_{\rm{2}}}\) is converted into \({\rm{O}}_{\rm{2}}^{{\rm{2 + }}}\) bond order decreases.
II. \({{\rm{O}}_{\rm{2}}}\) molecule is paramagnetic because it contains two unpaired electrons in \({{\rm{\pi }}^{\rm{*}}}\,{\rm{2}}{{\rm{p}}_{\rm{x}}}\) and \({{\rm{\pi }}^{\rm{*}}}\,{\rm{2}}{{\rm{p}}_{\rm{y}}}\). molecular orbitals.
III. The bond length in NO is greater than in \({\rm{N}}{{\rm{O}}^{\rm{ + }}}\).
Choose the correct statements.

1 Only I
2 I and II
3 II and III
4 II and IV
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313770 In forming (i) \({{\rm{N}}_{\rm{2}}} \to {\rm{N}}_{\rm{2}}^{\rm{ + }}\) and (ii) \({{\rm{O}}_{\rm{2}}} \to {\rm{O}}_{\rm{2}}^{\rm{ + }}\); the electrons respectively are removed from

1 \(\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\)
2 \(\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\)
3 \(\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\)
4 \(\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313771 The decreasing order of bond length for \({{\rm{N}}_{\rm{2}}}\) and its ions is correctly shown in

1 \({{\rm{N}}_{\rm{2}}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ = N}}_{\rm{2}}^{\rm{ + }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ = N}}_{\rm{2}}^{{\rm{2 + }}}\)
2 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ = N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ = N}}_{\rm{2}}^{\rm{ + }}{\rm{ > }}{{\rm{N}}_{\rm{2}}}\)
3 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{{\rm{1 + }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 + }}}{\rm{ > }}{{\rm{N}}_{\rm{2}}}\)
4 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ > }}{{\rm{N}}_{\rm{2}}}{\rm{ > N}}_{\rm{2}}^{\rm{ + }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 + }}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313772 What is the effect of the following processes on the bond order in \({{\rm{N}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{O}}_{\rm{2}}}\) ?
i) \({{\rm{N}}_{\rm{2}}} \to {\rm{N}}_{\rm{2}}^{\rm{ + }}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)
ii) \({{\rm{O}}_{\rm{2}}} \to {\rm{O}}_{\rm{2}}^{\rm{ + }}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)

1 Decreases in both (i) & (ii)
2 Increases in both (i) & (ii)
3 Increases in (i) but decreases in (ii)
4 Decreases in (i) but increases in (ii)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313773 Consider the following statements
I. When \({{\rm{O}}_{\rm{2}}}\) is converted into \({\rm{O}}_{\rm{2}}^{{\rm{2 + }}}\) bond order decreases.
II. \({{\rm{O}}_{\rm{2}}}\) molecule is paramagnetic because it contains two unpaired electrons in \({{\rm{\pi }}^{\rm{*}}}\,{\rm{2}}{{\rm{p}}_{\rm{x}}}\) and \({{\rm{\pi }}^{\rm{*}}}\,{\rm{2}}{{\rm{p}}_{\rm{y}}}\). molecular orbitals.
III. The bond length in NO is greater than in \({\rm{N}}{{\rm{O}}^{\rm{ + }}}\).
Choose the correct statements.

1 Only I
2 I and II
3 II and III
4 II and IV
For More Updates join with Us
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313770 In forming (i) \({{\rm{N}}_{\rm{2}}} \to {\rm{N}}_{\rm{2}}^{\rm{ + }}\) and (ii) \({{\rm{O}}_{\rm{2}}} \to {\rm{O}}_{\rm{2}}^{\rm{ + }}\); the electrons respectively are removed from

1 \(\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\)
2 \(\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\)
3 \(\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\)
4 \(\left( {{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{{\rm{\pi }}^{\rm{*}}}{\rm{2}}{{\rm{p}}_{\rm{x}}}} \right)\,\,{\rm{and}}\,\,\left( {{\rm{\pi 2}}{{\rm{p}}_{\rm{y}}}\,{\rm{or}}\,{\rm{\pi 2}}{{\rm{p}}_{\rm{x}}}} \right)\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313771 The decreasing order of bond length for \({{\rm{N}}_{\rm{2}}}\) and its ions is correctly shown in

1 \({{\rm{N}}_{\rm{2}}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ = N}}_{\rm{2}}^{\rm{ + }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ = N}}_{\rm{2}}^{{\rm{2 + }}}\)
2 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ = N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ = N}}_{\rm{2}}^{\rm{ + }}{\rm{ > }}{{\rm{N}}_{\rm{2}}}\)
3 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{{\rm{1 + }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 + }}}{\rm{ > }}{{\rm{N}}_{\rm{2}}}\)
4 \({\rm{N}}_{\rm{2}}^{{\rm{2 - }}}{\rm{ > N}}_{\rm{2}}^{\rm{ - }}{\rm{ > }}{{\rm{N}}_{\rm{2}}}{\rm{ > N}}_{\rm{2}}^{\rm{ + }}{\rm{ > N}}_{\rm{2}}^{{\rm{2 + }}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313772 What is the effect of the following processes on the bond order in \({{\rm{N}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{O}}_{\rm{2}}}\) ?
i) \({{\rm{N}}_{\rm{2}}} \to {\rm{N}}_{\rm{2}}^{\rm{ + }}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)
ii) \({{\rm{O}}_{\rm{2}}} \to {\rm{O}}_{\rm{2}}^{\rm{ + }}{\rm{ + }}{{\rm{e}}^{\rm{ - }}}\)

1 Decreases in both (i) & (ii)
2 Increases in both (i) & (ii)
3 Increases in (i) but decreases in (ii)
4 Decreases in (i) but increases in (ii)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313773 Consider the following statements
I. When \({{\rm{O}}_{\rm{2}}}\) is converted into \({\rm{O}}_{\rm{2}}^{{\rm{2 + }}}\) bond order decreases.
II. \({{\rm{O}}_{\rm{2}}}\) molecule is paramagnetic because it contains two unpaired electrons in \({{\rm{\pi }}^{\rm{*}}}\,{\rm{2}}{{\rm{p}}_{\rm{x}}}\) and \({{\rm{\pi }}^{\rm{*}}}\,{\rm{2}}{{\rm{p}}_{\rm{y}}}\). molecular orbitals.
III. The bond length in NO is greater than in \({\rm{N}}{{\rm{O}}^{\rm{ + }}}\).
Choose the correct statements.

1 Only I
2 I and II
3 II and III
4 II and IV
NEET DIGITAL LIBRARY