3.9—The polarising power of a cation depends on its radius and charge, and the polarisability of an anion also depends on its

Understand that the polarising power of a cation depends on its radius and charge, and the polarisability of an anion also depends on its radius and charge.

Use —the polarising power of a cation depends on its radius and charge, and the polarisability of an anion also depends on its to connect the rule to the data and decision in the question.

This matters because —the polarising power of a cation depends on its radius and charge, and the polarisability of an anion also depends on its determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —the polarising power of a cation depends on its radius and charge, and the polarisability of an anion also depends on its to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —The polarising power of a cation depends on its radius and charge, and the polarisability of an anion also depends on its is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.