2.14—Predict the electronic configuration of atoms of the elements from hydrogen to krypton inclusive and their ions

Be able to predict the electronic configuration of atoms of the elements from hydrogen to krypton inclusive and their ions, using s, p, d notation and electron-in- boxes notation.

Use —predict the electronic configuration of atoms of the elements from hydrogen to krypton inclusive and their ions to connect the rule to the data and decision in the question.

This matters because —predict the electronic configuration of atoms of the elements from hydrogen to krypton inclusive and their ions determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —predict the electronic configuration of atoms of the elements from hydrogen to krypton inclusive and their ions to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —Predict the electronic configuration of atoms of the elements from hydrogen to krypton inclusive and their ions is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.