Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Chemical Bonding and Molecular Structure question

2011 · Q109
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Chemistry
  4. /Chemical Bonding and Molecular Structure
  5. /2011 · Q109

Chemical Bonding and Molecular Structure question

2011 · Q109

NEETChemistryChemical Bonding and Molecular StructureMCQ+4 / −1
Which of the following has the minimum bond length ?
  1. A
    O2+
  2. B
    O2−-−
  3. C
    O22−-−
  4. D
    O2
View written solutionFree

Correct answer: A

Electronic configuration
O2 : σ1s2σ∗1s2σ2s2σ∗2s2σ2pz2π2py2π∗2py1π∗2pz1\sigma 1{s^2}{\sigma ^*}1{s^2}\sigma 2{s^2}{\sigma ^*}2{s^2}\sigma 2p_z^2\pi 2p_y^2{\pi ^*}2p_y^1{\pi ^*}2p_z^1σ1s2σ∗1s2σ2s2σ∗2s2σ2pz2​π2py2​π∗2py1​π∗2pz1​

Bond order = 12(8−4){1 \over 2}\left( {8 - 4} \right)21​(8−4) = 2

O2+ : Bond order = 12(8−3){1 \over 2}\left( {8 - 3} \right)21​(8−3) = 2.5

O2- : Bond order = 12(8−5){1 \over 2}\left( {8 - 5} \right)21​(8−5) = 1.5

O22- : Bond order = 12(8−6){1 \over 2}\left( {8 - 6} \right)21​(8−6) = 1

As bond order increases, bond length decreases.

PreviousNext

More from Chemical Bonding and Molecular Structure

  • The correct order of increasing bond length of C − H, C − O, C − C and C=C is2011 · MCQ
  • Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, NO2−​. NO3−​, NH2−​, NH4+​, SCN−?2011 · MCQ
  • The pairs of species of oxygen and their magnetic behavior are noted below. Which of the following presents the correct description?2011 · MCQ
  • In which of the following molecules the central atom does not have sp3 hybridization?2010 · MCQ
  • Some of the properties of the two species, NO3−​ and H3​O+ are described below. Which one of them is current?2010 · MCQ
  • Which one of the following species does not exist under normal conditions?2010 · MCQ
  • In which of the following pairs of molecules/ ions, the central atoms have sp2 hybridisation ?2010 · MCQ
  • In which one of the following species the central atom has the type of hybridization which is not the same as that present in the other three ?2010 · MCQ