Question

Assertion (A): All the carbon atoms in $H_{2}C=C=C{H}_2$ are $s{p}^2$ hybridised.

Reason (R): In this molecule all the carbon atoms are attached to each other by double bonds.

• A. A is not correct but R is correct.
• B. Both A and R are correct but R is not the correct explanation of A
• C. Both A and R are correct and R is the correct explanation of A.
• D. Both A and R are not correct.

Answer 1

The correct option is A

A is not correct but R is correct.

Analysing the assertion :

All the carbon atoms in $H_{2}C=C=C{H}_2$ are not $s{p}^2$ hybridised because the central carbon is sp hybridised as it forms only 2 sigma bonds.

So, the assertion is incorrect.

Analysing the reason


In this molecule $(H_{2}C=C=C{H}_2)$, all the three carbon atoms are attached to each other by double bonds. So, the reason is correct.

Therefore, assertion is wrong and reason is correct.

So, option (D) is the correct answer.