17.10—The meaning of the term ‘coordination number’

Understand the meaning of the term ‘coordination number’.

Use —the meaning of the term ‘coordination number’ to connect the rule to the data and decision in the question.

This matters because —the meaning of the term ‘coordination number’ determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —the meaning of the term ‘coordination number’ to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —The meaning of the term ‘coordination number’ is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.