Among the given match, which one is not correctly representing the property as indicated?Size : Al3+ < Mg2+ < Na+ < F–Ionisation energy : B < C < N < OElectron Affinity : I < Br < F < ClMetallic radius : Li < Na < Rb < Cs

Let's analyze each statement:

1. Size: Al3+ < Mg2+ < Na+ < F– This is correct. The size of ions decreases with increasing positive charge and increases with increasing negative charge. So, Al3+ is smaller than Mg2+, which is smaller than Na+, which is smaller than F–.

2. Ionisation energy: B < C < N < O This is incorrect. Ionization energy increases across a period from left to right on the periodic table. However, oxygen has a lower ionization energy than nitrogen due to the half-filled stability of nitrogen. So, the correct order should be B < C < O < N.

3. Electron Affinity: I < Br < F < Cl This is incorrect. Electron affinity generally increases across a period from left to right on the periodic table and decreases down a group. So, the correct order should be I < Br < Cl < F.

4. Metallic radius: Li < Na < Rb < Cs This is correct. The metallic radius (or atomic radius) generally increases down a group on the periodic table. So, lithium is smaller than sodium, which is smaller than rubidium, which is smaller than cesium.

So, the statements "Ionisation energy: B < C < N < O" and "Electron Affinity: I < Br < F < Cl" are not correctly representing the properties as indicated.