When does a node in a 2-3 tree split?

If the node has more than data two values.

Explanation:

A 2-3 Tree is a type of search tree but it is different from binary search tree.

Properties of 2-3 tree:

Every node has either 1 or 2 values. A node with 1 value can be either a leaf or can have exactly 2 children. A node with 2 values is either a leaf node or can have exactly 3 children. All the leaf nodes are present at the same level.