IB Chemistry Topic 2 Atomic structure 12.1 Electrons in atoms HL

IB Chemistry Topic 2 Atomic structure 12.1 Electrons in atoms HL
Calculations of how to determine ionisation energy IE and interpreting trends in IE in the periodic table. Interpretation of 1st IE graphs and successive IE graphs.

0:04 Ionisation energy IE
0:52 Emission spectrum and IE
1:39 Example IE calculations
3:41 Factors affecting IE
5:15 Period trends for IE
8:22 Interpretation of 1st IE graphs
11:05 Interpretation of successive IE graphs

​12.1 Electrons in atoms
• In an emission spectrum, the limit of convergence at higher frequency corresponds to the first ionization energy.
• Trends in first ionization energy across periods account for the existence of main energy levels and sub-levels in atoms.
• Successive ionization energy data for an element give information that shows relations to electron configurations.
• Solving problems using E=hv.
• Calculation of the value of the first ionization energy from spectral data which gives the wavelength or frequency of the convergence limit.
• Deduction of the group of an element from its successive ionization energy data.
• Explanation of the trends and discontinuities in first ionization energy across a period

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