The document discusses how the ionization energies of elements can indicate their position in the periodic table. It notes that potassium, as a group 1 element, has a jump in energy needed to remove its second electron. Similarly, it identifies jumps for elements in groups 2 through 5 that correspond to removing the third, fourth, fifth and sixth electrons respectively, demonstrating how ionization energies reflect the electron configuration of elements.

1. A
Creative Chemistry
PowerPoint Presentation
By Nigel Saunders
Copyright © 2003 Nigel Saunders, all rights reserved
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Ionisation energies and group numbersIonisation energies and group numbers

2. Ionisation energies and group numbersIonisation energies and group numbers
Successive ionisation energies for potassium
Potassium is in group 1
Notice the “jump” in energy needed to remove the 2nd
electron

3. Ionisation energies and group numbersIonisation energies and group numbers
Successive ionisation energies for potassium
The different “jumps” are evidence for the arrangement of
electrons in energy levels and sub-levels
level 1
level 2
level 3
level 4

4. Which group is this element in?
Group 4
Notice the “jump” in energy needed to remove the 5th
electron
Ionisation energies and group numbersIonisation energies and group numbers

5. Which group is this element in?
Group 2
Notice the “jump” in energy needed to remove the 3rd
electron
Ionisation energies and group numbersIonisation energies and group numbers

6. Which group is this element in?
Group 3
Notice the “jump” in energy needed to remove the 4th
electron
Ionisation energies and group numbersIonisation energies and group numbers

7. Which group is this element in?
Group 5
Notice the “jump” in energy needed to remove the 6th
electron
Ionisation energies and group numbersIonisation energies and group numbers

8. Which group is this element in?
Group 1
Notice the “jump” in energy needed to remove the 2nd
electron
Ionisation energies and group numbersIonisation energies and group numbers