Question

Which graphs have a chromatic number of 1?

Short answer

The graph with no edges have a chromatic number of1.

Step-by-step solution

Given information.

Given -: Chromatic Number is 1.

Definition of the Graph

Graph is a numerical portrayal of an organization and it depicts the connection among lines and focuses. A graph comprises of certain places and lines between them. The length of the lines and position of the focuses don't make any difference. Each item in a graph is known as a node.

Explanation

Any Graph with an edge will require more than one tone since it makes two contiguous vertices.

Hence The only graphs with a chromatic number of one are graphs composed of multiple singletons that is graph with no edges.