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NEET 2022
Exam
NEET
Year
2022
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

NEET 2022 · Chemistry · Chemical Bonding and Molecular Structure

The correct order of bond angles in the following compounds/species...

The correct order of bond angles in the following compounds/species is :The correct order of bond angles in the following compounds/species is :

Options

  1. AH2O<NH3<NH4+<CO2\mathrm{H}_2 \mathrm{O} < \mathrm{NH}_3 < \stackrel{+}{\mathrm{NH}_4} < \mathrm{CO}_2
  2. BH2O<NH4+<NH3<CO2\mathrm{H}_2 \mathrm{O} < \stackrel{+}{\mathrm{NH}_4} < \mathrm{NH}_3 < \mathrm{CO}_2
  3. CH2O<NH4+=NH3<CO2\mathrm{H}_2 \mathrm{O} < \stackrel{+}{\mathrm{NH}_4}=\mathrm{NH}_3 < \mathrm{CO}_2
  4. DCO2<NH3<H2O<NH4+\mathrm{CO}_2 < \mathrm{NH}_3 < \mathrm{H}_2 \mathrm{O} < \stackrel{+}{\mathrm{NH}_4}

Correct answer

A. H2O<NH3<NH4+<CO2\mathrm{H}_2 \mathrm{O} < \mathrm{NH}_3 < \stackrel{+}{\mathrm{NH}_4} < \mathrm{CO}_2

Step-by-step solution

According to VSEPR theory, bond angle decreases with increase in lone pair, for molecules of same hybridisation. With increase in s-character, bond angle increase. ∴\therefore order of bond angle = The correct order of bond angles in the following compounds/species is :
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