Question

Need clear drawing.

1) Draw the other significant resonance contributor for the following compound; include lone pairs of electrons, formal charges, and hydrogen atoms. 2) Add curved arrows to both structures to show the delocalization of electron pairs.

Answer 1

Concepts and reason

The concept used to solve this problem is resonance and curved arrow notation.

Curved arrows are used to show the direction of movement of electron. Curved arrows have to be added to the given resonating structure to show the delocalization of electron pairs to form the other resonance contributor.

Fundamentals

When a single Lewis structure is not able to explain the bonding of a compound, it gives rise to certain phenomenon called resonance. Various resonating structures of a single compound arise due to the delocalization of electrons (lone pairs and $\pi$ electrons). All the resonating structures give rise to a resonance hybrid structure which has minimum energy and explains the stability and bonding of the molecule.

Part 1

The resonating structure of methyl isocyanate is shown as follows:

Part 2

The curved arrows to both the structures are shown as follows:

Ans: Part 1

The other significant resonating contributor for the compound is:

Part 2

The curved arrows to both the structures to show the delocalization of electron pairs are shown as follows: