3.3 Ionisation Energy What is ionisation energy? The 1st ionisation energy, ΔHi1 is the energy needed to remove one electron from each atom in one mole of the atoms of the element in the gaseous state to form one mole of gaseous 1+ ions The general...
3.2 Electronic Configuration Ways to represent electronic configuration Electronic configuration describes how the electrons in an atom/ion are arranged in their shells, sub-shells and orbitals. Using 'electrons-in-boxes': . Using energy levels: Using...
3.1 Sub-shells and Atomic Orbitals Principle quantum shell Electrons are arranged outside the nucleus in energy levels or principle quantum shell, n. The principal quantum shells are numbered according how far are they from the nucleus ...
CHAPTER 3: Electrons in Atoms Sub-shells and Atomic Orbitals Electronic Configuration Ionisation Energy Learning outcomes: describe the number and relative energies of the s, p and d orbitals for the principal quantum numbers 1, 2 and 3 and also the 4s...