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

313712 In which of the following sets, all the species are diamagnetic in nature?

1 \(\left[\mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{2+}, \mathrm{N}_{2}^{2-}\right]\)
2 \(\left[\mathrm{C}_{2}, \mathrm{O}_{2}^{2-}, \mathrm{N}_{2}^{2+}\right]\)
3 \(\left[\mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{+}, \mathrm{O}_{2}^{2+}\right]\)
4 \(\left[\mathrm{N}_{2}^{+}, \mathrm{O}_{2}^{2+}, \mathrm{B}_{2}\right]\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313713 The molecular electronic configuration of \(\mathrm{H}_{2}^{-}\) ion is

1 \((\sigma \mathrm{ls})^{2}\)
2 \((\sigma 1 \mathrm{~s})^{2}\left(\sigma^{*} 1 \mathrm{~s}\right)^{2}\)
3 \((\sigma 1 \mathrm{~s})^{2}\left(\sigma^{*} 1 \mathrm{~s}\right)^{1}\)
4 \((\sigma 1 \mathrm{~s})^{3}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313723 The number of antibonding electron pairs in \({\rm{O}}_{\rm{2}}^{{\rm{2 - }}}\) molecular ion on the basis of molecular orbital theory is (Atomic number of O is 8)

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

313714 Molecular orbital electronic configuration for ' \(\mathrm{X}\) ' anion is \(\mathrm{KK}\) \(\sigma^{*} 2 \mathrm{~s}^{2} \sigma^{*} 2 \mathrm{~s}^{2} \pi 2 \mathrm{p}_{\mathrm{x}}{ }^{2} 2 \mathrm{p}_{\mathrm{y}}{ }^{2} \sigma 2 \mathrm{p}_{\mathrm{z}}{ }^{2} \pi^{*} 2 \mathrm{p}_{\mathrm{x}}{ }^{1}\), the anion ' \(\mathrm{X}\) ' is

1 \(\mathrm{N}_{2}^{-}\)
2 \(\mathrm{O}_{2}^{-}\)
3 \(\mathrm{N}_{2}^{2-}\)
4 \(\mathrm{O}_{2}^{2-}\)
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313712 In which of the following sets, all the species are diamagnetic in nature?

1 \(\left[\mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{2+}, \mathrm{N}_{2}^{2-}\right]\)
2 \(\left[\mathrm{C}_{2}, \mathrm{O}_{2}^{2-}, \mathrm{N}_{2}^{2+}\right]\)
3 \(\left[\mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{+}, \mathrm{O}_{2}^{2+}\right]\)
4 \(\left[\mathrm{N}_{2}^{+}, \mathrm{O}_{2}^{2+}, \mathrm{B}_{2}\right]\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313713 The molecular electronic configuration of \(\mathrm{H}_{2}^{-}\) ion is

1 \((\sigma \mathrm{ls})^{2}\)
2 \((\sigma 1 \mathrm{~s})^{2}\left(\sigma^{*} 1 \mathrm{~s}\right)^{2}\)
3 \((\sigma 1 \mathrm{~s})^{2}\left(\sigma^{*} 1 \mathrm{~s}\right)^{1}\)
4 \((\sigma 1 \mathrm{~s})^{3}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313723 The number of antibonding electron pairs in \({\rm{O}}_{\rm{2}}^{{\rm{2 - }}}\) molecular ion on the basis of molecular orbital theory is (Atomic number of O is 8)

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

313714 Molecular orbital electronic configuration for ' \(\mathrm{X}\) ' anion is \(\mathrm{KK}\) \(\sigma^{*} 2 \mathrm{~s}^{2} \sigma^{*} 2 \mathrm{~s}^{2} \pi 2 \mathrm{p}_{\mathrm{x}}{ }^{2} 2 \mathrm{p}_{\mathrm{y}}{ }^{2} \sigma 2 \mathrm{p}_{\mathrm{z}}{ }^{2} \pi^{*} 2 \mathrm{p}_{\mathrm{x}}{ }^{1}\), the anion ' \(\mathrm{X}\) ' is

1 \(\mathrm{N}_{2}^{-}\)
2 \(\mathrm{O}_{2}^{-}\)
3 \(\mathrm{N}_{2}^{2-}\)
4 \(\mathrm{O}_{2}^{2-}\)
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313712 In which of the following sets, all the species are diamagnetic in nature?

1 \(\left[\mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{2+}, \mathrm{N}_{2}^{2-}\right]\)
2 \(\left[\mathrm{C}_{2}, \mathrm{O}_{2}^{2-}, \mathrm{N}_{2}^{2+}\right]\)
3 \(\left[\mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{+}, \mathrm{O}_{2}^{2+}\right]\)
4 \(\left[\mathrm{N}_{2}^{+}, \mathrm{O}_{2}^{2+}, \mathrm{B}_{2}\right]\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313713 The molecular electronic configuration of \(\mathrm{H}_{2}^{-}\) ion is

1 \((\sigma \mathrm{ls})^{2}\)
2 \((\sigma 1 \mathrm{~s})^{2}\left(\sigma^{*} 1 \mathrm{~s}\right)^{2}\)
3 \((\sigma 1 \mathrm{~s})^{2}\left(\sigma^{*} 1 \mathrm{~s}\right)^{1}\)
4 \((\sigma 1 \mathrm{~s})^{3}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313723 The number of antibonding electron pairs in \({\rm{O}}_{\rm{2}}^{{\rm{2 - }}}\) molecular ion on the basis of molecular orbital theory is (Atomic number of O is 8)

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

313714 Molecular orbital electronic configuration for ' \(\mathrm{X}\) ' anion is \(\mathrm{KK}\) \(\sigma^{*} 2 \mathrm{~s}^{2} \sigma^{*} 2 \mathrm{~s}^{2} \pi 2 \mathrm{p}_{\mathrm{x}}{ }^{2} 2 \mathrm{p}_{\mathrm{y}}{ }^{2} \sigma 2 \mathrm{p}_{\mathrm{z}}{ }^{2} \pi^{*} 2 \mathrm{p}_{\mathrm{x}}{ }^{1}\), the anion ' \(\mathrm{X}\) ' is

1 \(\mathrm{N}_{2}^{-}\)
2 \(\mathrm{O}_{2}^{-}\)
3 \(\mathrm{N}_{2}^{2-}\)
4 \(\mathrm{O}_{2}^{2-}\)
NEET DIGITAL LIBRARY
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313712 In which of the following sets, all the species are diamagnetic in nature?

1 \(\left[\mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{2+}, \mathrm{N}_{2}^{2-}\right]\)
2 \(\left[\mathrm{C}_{2}, \mathrm{O}_{2}^{2-}, \mathrm{N}_{2}^{2+}\right]\)
3 \(\left[\mathrm{O}_{2}^{2-}, \mathrm{O}_{2}^{+}, \mathrm{O}_{2}^{2+}\right]\)
4 \(\left[\mathrm{N}_{2}^{+}, \mathrm{O}_{2}^{2+}, \mathrm{B}_{2}\right]\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313713 The molecular electronic configuration of \(\mathrm{H}_{2}^{-}\) ion is

1 \((\sigma \mathrm{ls})^{2}\)
2 \((\sigma 1 \mathrm{~s})^{2}\left(\sigma^{*} 1 \mathrm{~s}\right)^{2}\)
3 \((\sigma 1 \mathrm{~s})^{2}\left(\sigma^{*} 1 \mathrm{~s}\right)^{1}\)
4 \((\sigma 1 \mathrm{~s})^{3}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313723 The number of antibonding electron pairs in \({\rm{O}}_{\rm{2}}^{{\rm{2 - }}}\) molecular ion on the basis of molecular orbital theory is (Atomic number of O is 8)

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

313714 Molecular orbital electronic configuration for ' \(\mathrm{X}\) ' anion is \(\mathrm{KK}\) \(\sigma^{*} 2 \mathrm{~s}^{2} \sigma^{*} 2 \mathrm{~s}^{2} \pi 2 \mathrm{p}_{\mathrm{x}}{ }^{2} 2 \mathrm{p}_{\mathrm{y}}{ }^{2} \sigma 2 \mathrm{p}_{\mathrm{z}}{ }^{2} \pi^{*} 2 \mathrm{p}_{\mathrm{x}}{ }^{1}\), the anion ' \(\mathrm{X}\) ' is

1 \(\mathrm{N}_{2}^{-}\)
2 \(\mathrm{O}_{2}^{-}\)
3 \(\mathrm{N}_{2}^{2-}\)
4 \(\mathrm{O}_{2}^{2-}\)
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