8.11—Reasons for the trend in ionisation energy down Groups 1 and 2

Understand reasons for the trend in ionisation energy down Groups 1 and 2.

Use —reasons for the trend in ionisation energy down groups 1 and 2 to connect the rule to the data and decision in the question.

This matters because —reasons for the trend in ionisation energy down groups 1 and 2 determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —reasons for the trend in ionisation energy down groups 1 and 2 to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —Reasons for the trend in ionisation energy down Groups 1 and 2 is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.