Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrogen2 Marks
Question
Hydrogen generally forms covalent compounds. Give reason.
✓
Answer
Because of ionization enthalphy, hydrogen resembles more with halogens, $\Delta \mathrm{H}$ of Li is $520 \mathrm{~kJ} \mathrm{~mol}^{-1}, \mathrm{~F}$ is $1680 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and that of $\mathrm{H} 1312 \mathrm{~kJ} \mathrm{~mol}^{-1}$.
Like halogens, it forms a diatomic molecule, combines with elements to form hydrides and a large number of covalent compounds.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.