which of the structural formulas below could exist according to the honc 1234 rule?
which of the structural formulas below could exist according to the honc 1234 rule?
Answer
Explanation:
Step1: Recall HONC 1234 rule
Hydrogen (H) forms 1 bond, Oxygen (O) forms 2 bonds, Nitrogen (N) forms 3 bonds and Carbon (C) forms 4 bonds.
Step2: Analyze first structure
In the first structure, each hydrogen has 1 bond, each carbon has 4 bonds and nitrogen has 3 bonds. It follows the HONC 1234 rule.
Step3: Analyze second structure
In the second structure, each hydrogen has 1 bond, each carbon has 4 bonds and oxygen has 2 bonds. It follows the HONC 1234 rule.
Step4: Analyze third structure
In the third structure, each hydrogen has 1 bond, each carbon has 4 bonds and oxygen has 2 bonds. It follows the HONC 1234 rule.
Step5: Analyze fourth structure
In the fourth structure, the oxygen bonded to carbon has 3 bonds (one to carbon and two to hydrogens), which violates the HONC 1234 rule as oxygen should form 2 bonds.
Answer:
The first, second and third structural formulas could exist according to the HONC 1234 rule.