Ionisation Energies and Periodicity 0.0 / 5 ? ChemistryThe Periodic TableA2/A-levelEdexcel Created by: DavidW001Created on: 01-05-19 15:20 What Experimental Evidence is there for Electron Shells? Ionisation energy data (jumps) and emission Spectra 1 of 22 What is the Standard equation for First ionisation energy? X(g)─>X+(g) +e- 2 of 22 Trend In ionisation energy down group? Decreases 3 of 22 Trend In ionisation energy across period? Increases 4 of 22 Examples of anomalous ionisation energy Lead (Pb) has a higher I.E. than Tin which is directly above it. 5 of 22 What is an S-Block Element? An element with its outermost electron in a an s subshell 6 of 22 Which groups in the periodic table are p-block elements? Groups 3-8 7 of 22 Which groups in the periodic table are d-block elements? Elements Scandium to Zinc in period 4 and Ytrrium to Cadmium in period 5. 8 of 22 Types of Atomic Radius Covalent radii, Van der Waals radii and Metallic radii 9 of 22 Trend in Atomic Radius across a period Decreases: Nuclear Charge outweighs increased shielding. 10 of 22 Electron configuration of Phosphorus? 15 1s2, 2s2, 2p6, 3s2, 3p3 11 of 22 Electron Configuration of Potassium? 19 1s2, 2s2, 2p6, 3s2, 3p6, 4s1 12 of 22 Electron Configuration of Chromium? 24 1s2, 2s2, 2p6, 3s2, 3p6, 3d5, 4s1 13 of 22 Quantum shell definition? A quantum shell defines the energy level of an electron. 14 of 22 Hund's rule? Electrons will occupy the orbitals singly before pairing up. 15 of 22 Pauli Exclusion Principle? 2 electrons cannot occupy the same orbital unless they have opposite spin. 16 of 22 Electron configuration of Copper? 29 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s1 17 of 22 Trend in atomic radius down a group? Increases 18 of 22 Aufbau Principle? Builds up energy levels 19 of 22 A covalent bond is? The strong electrostatic attraction between two positive nuclei and the shared pair of electrons between them. 20 of 22 Dative Covalent Bond When an orbital with a lone pair of electrons in one atoms overlaps with a vacant orbital in another atom. 21 of 22 Larger the Bond Length Weaker the bond 22 of 22
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