MCQ
Correct order of Atomic radius
- A$Be > Li > B > C$
- B$N > O > C > B$
- C$P > Si > Mg > Na$
- ✓$I > P > S > Cl$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$C{H_3} - C{H_2} - CH = C{H_2}\xrightarrow[{{H_2}{O_2}}]{{HBr}}$
The heat of the reaction $2Mg + Si{O_2} \to 2MgO + Si$ is......$kJ$

$(1)$ $C{H_2} = C{H_2}$
$(2)$ ${(C{H_3})_2}C = C{H_2}$
$(3)$ $C{H_3}CH = CHC{H_3}$