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

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
Which of the following fact is directly explained by the statement 'oxygen is a  smaller atom than sulphur' ?
  • A
    $H_2O$ boils at a much higher temperature than $H_2S$
  • B
    $H_2O$ undergoes intermolecular hydrogen bonding
  • C
    $H_2O$ is liquid and $H_2S$ is gas at room temperature
  • D
    $S-H$ bond is longer than $O-H$ bond
✓

Answer

$(d)$ As size of sulphur is higher than that of oxygen atom, hence bond length of  $S-H$ bond is higher than that of $O-H$ bond.

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