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-p-Block elements - I — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Boron form covalent compound due to
  • A
    Higher ionization energy
  • B
    Lower ionization energy
  • C
    Small size
  • ✓
    Both $(a)$ and $(c)$
✓

Answer

Correct option: D.
Both $(a)$ and $(c)$
d
Boron forms covalent bonds due to small size of boron. Also because of its size the sum of its first three ionization enthalpies is very high. This prevents it to form $+3$ ions and forces it to form only covalent compounds.

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