This module deals with periodicity and trends in ionisation energies with a focus on their indication of orbital energy
- Page 1Introduction - ReviewIonisation energy (enthalpy) definition and energetics. The endothermic nature of the ionisation is highlighted along with the fact that electrons that are farther from the nucleus (in higher energy orbitals) are easier to remove.
- 11 marksPage 2Questions 1The definition of ionisation energy. The correlation of energy required to remove an electron with the degree of separation of the electron from the nucleus. The periodicity of ionisation energies and the correlation of this with the arrangement of elements in the periodic table.
- 2 marksPage 3Charge separation
- 6 marksPage 4Interpreting
- 12 marksPage 5Connect to periodic table
- Page 6Factors - ReviewA discussion of how increase in nuclear charge and increase in repulsive forces due to extra electrons affect ionisation energies, both for elements in the same row and the same period
- 12 marksPage 7Questions 2Trends in ionisation energies for elements in the same period and the same group along with explanation of these
- 1 marksPage 8Trends 1
- 1 marksPage 9Trends 2
- 2 marksPage 10Trends 3
- Page 11Factors 2 - ReviewA closer look at the irregularities in the trend for elements in the same period with reference to the higher energy of p orbitals and the lower energy of the p3 configuration
- 11 marksPage 12Questions 3The two cases where the ionisation enthalpy decreases going across a period
- 1 marksPage 13First elements?
- 1 marksPage 14Which group?