MCQ
How many of unpaired electron in carbon atom is :
- ✓$2$
- B$4$
- C$1$
- D$4$

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$AB , A _2$ and $B _2$ are diatomic molecule. If the bond enthalpies of $A _2, B _2$ and $AB$ are in the ratio $1: 0.5: 1$, then the bond enthalpy of $A_2$ is $......\,kJ\,mol ^{-1}$ (Nearest integer)