Q3 / 180 · KCET 2022 · Chemistry

Which of the following hydrides is electron deficient?

  • A
    $\mathrm{CaH}_2$
  • B
    $\mathrm{CH}_4$
  • Correct answer
    C
    $\mathrm{B}_2 \mathrm{H}_6$
  • D
    $\mathrm{NaH}$

Solution

Among the given hydrides $\mathrm{B}_2 \mathrm{H}_6$ is electron deficient because it has 8 covalent bonds and 12 electrons but it requires a total 14 electrons to form bonding. It lacks 2 electron pairs.

Hence, the correct answer is option: 'C'.

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