Consider the C–N bonds in N-methylacetamide. Rank them by i) increasing bond length and ii) increasing stretching frequency.

Diagram comparing C–N bond lengths and stretching frequencies in N-methylacetamide.

Illustration showing C–N bond lengths and stretching frequencies in N-methylacetamide.

Visual representation of C–N bond lengths and frequencies in N-methylacetamide.

Graphic illustrating C–N bond lengths and stretching frequencies in N-methylacetamide.