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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 4. Chemical bonding and molecular structure4 Marks
MCQ
Which of the following is the wrong statement?
  • A
    $ONCl$ and $ONO^-$ are isoelectronic.
  • B
    $O_3$ molecule is bent
  • C
    Ozone is violet-black in solid state
  • D
    Ozone is diamagnetic gas.
✓

Answer

$(a)$ Number of electrons in
$\mathrm{ONCl}=3.2 \mathrm{e}^{-}$
$\mathrm{ONO}^{-}=24 \mathrm{e}^{-}$
Thus, $ \ce{ONCl}$ and $\ce{ONO}-$ are not isoelectronic.
$(b) \mathrm{O}_{3}$ has bent shape structure. Central atom $O$ is $s p^{2}$ hybridised with $1$ lone pair of electrons.
$(c) $Ozone is violet$-$black in solid state.
$(d) O_{3}$ has no unpaired electrons, thus it is diamagnetic.

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