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

2010 · Q122
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. /2010 · Q122

Chemical Bonding and Molecular Structure question

2010 · Q122

NEETChemistryChemical Bonding and Molecular StructureMCQ+4 / −1
In which of the following pairs of molecules/ ions, the central atoms have sp2 hybridisation ?
  1. A
    NO2−_2^{ - }2−​ and NH3
  2. B
    BF3 and NO2−_2^{ - }2−​
  3. C
    NH2−_2^{ - }2−​ and H2O
  4. D
    BF3 and NH2−_2^{ - }2−​
View written solutionFree

Correct answer: B

The hybridisation of the central atom can be calculated as

H = $${1 \over 2}\left[ \begin{matrix} \left( \begin{matrix} No.,of,electrons \ in,valence,shell \ of,atom \\end{matrix} \right) + \left( \begin{matrix} No.,of,monovalent \ atoms,around \ central,atom \\end{matrix} \right) \

  • \left( \begin{matrix} Ch{\mathop{\rm arge}\nolimits} ,on \ cation \\end{matrix} \right) + \left( \begin{matrix} Ch{\mathop{\rm arge}\nolimits} ,on \ anion \\end{matrix} \right) \\end{matrix} \right]<br><br> $ \therefore $ For BF<sub>3</sub>, H = {1 \over 2}\left[ {(3) + (3) - (0) + (0)} \right] \Rightarrow 3 \Rightarrow sp<sup>2</sup> hybridisation<br><br> $ \therefore $ For NO<sub>2</sub><sup>-</sup>, H ={1 \over 2}\left[ {(5) + (0) - (0) + (1)} \right] \Rightarrow 3 \Rightarrow $$ sp2 hybridisation
PreviousNext

More from Chemical Bonding and Molecular Structure

  • 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
  • What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas?2009 · MCQ
  • In which of the following molecules/ions BF3, NO2−​, NH2−​ and H2O, the central atom is sp2 hybridised?2009 · MCQ
  • According to MO theory which of the lists ranks the nitrogen species in terms of increasing bond order ?2009 · MCQ
  • Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them2008 · MCQ
  • The correct order of increasing bond angles in the following triatomic species is2008 · MCQ
  • In which of the following pairs, the two species are isostructural?2007 · MCQ
  • The correct order of C − O bond length among CO, CO32−​, CO2 is2007 · MCQ