Question

Assertion :Tetravalency of carbon leading to formation of single, double and triple bonds. Reason: The electronic configuration of carbon is $2,4$. Carbon has $4$ valence electrons and by sharing $4$ electrons. It will have a stable configuration.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

tetravalency means four valence electrons. As carbon has four valence electrons hence it can form straight or branched chains and cyclic rings by forming single, double, and triple bonds. So the $\text{assertion is correct.}$

A carbon with electronic configuration 2,4 completes its octet or gets stable electronic configuration only by sharing its valence electrons with other atoms so carbon atoms have the tendency to form four covalent bonds. This indicates that $\text{reason is the correct explanation for assertion.}$

Hence, option $A$ is correct.