Question

The double bond between the two carbon atoms in the $C_2{H}_4$ molecule indicates :

• A. two pairs of mobile electrons
• B. two pairs of shared electrons
• C. two pairs of unpaired electrons
• D. two pairs of lone electrons

Answer 1

The correct option is B two pairs of shared electrons

Valency of carbon is 4 out of which 2 are satisfied by two hydrogen atoms the remaining two are satisfied by the c-c double bond, where 4 electrons are shared between the two carbon atoms thus satisfying all the valencies. This can be clearly understood with the help of the figure given alongside.