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1. Some basic concept of chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry1. Some basic concept of chemistry1 Mark
MCQ
Which of the following relation is incorrect
  • A
    $1\, mol\, N^{-3} \,ions$ have $10\, mol$ electrons
  • ✓
    $1 \,mol\, O^{-2}\, ions$ have $6.023 \times 10^{22}$ electrons
  • C
    $1\, mole\, CH_4$ has $10\, mol$ protons
  • D
    $1 \,mole$ water has $10\, mol$ protons
✓

Answer

Correct option: B.
$1 \,mol\, O^{-2}\, ions$ have $6.023 \times 10^{22}$ electrons
b
$1\, \mathrm{mol} \,\mathrm{N}^{-3}$ ion $\rightarrow 1 \times 10\, \mathrm{mol} \,\mathrm{e}^{-}$

$1 \,\mathrm{mol}\, \mathrm{O}^{-2}$ ion $\rightarrow 1 \times 10\, \mathrm{mol}\, \mathrm{e}^{-}=6.023 \times 10^{24} \,\mathrm{e}^{-}$

$1\, \mathrm{mol}\, \mathrm{CH}_{4} \Rightarrow 1 \times 10 \,\mathrm{mol}$ protons

$1 \,\mathrm{mol} \,\mathrm{H}_{2} \mathrm{O} \Rightarrow 1 \times 10\, \mathrm{mol}$ protons

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