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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
$'O-N-O'$ bond angle is maximum in ?
  • A
    $N_2O$
  • ✓
    $NO_2^ + $
  • C
    $NO_2^ - $
  • D
    $NO_3^ - $
✓

Answer

Correct option: B.
$NO_2^ + $
b
The ONO angle is maximum in $NO _{2}^{+}$ In $NO _{3}^{-}$, bond angle is $=120^{\circ}$ due to sp $^{2}$ -hybridization with no lone pair $N O _{2}^{+}, N O _{2}^{-}$ and $NO _{2}$ have bond angles nearly $180^{\circ}( sp )$ with one lone pair, $115^{\circ}\left( sp ^{2}\right)$ with one lone pair and $134^{\circ}$ respectively.

Thus, ON O angle is maximum in $NO _{2}^{+}$.

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