Содержание
- 2. INTRODUCTION This Powerpoint show is one of several produced to help students understand selected topics at
- 3. CONTENTS Introduction Electronic configuration Bonding & structure Atomic radius 1st Ionisation Energy Electrical conductivity Electronegativity Melting
- 4. The Periodic Table is made up by placing the elements in ATOMIC NUMBER ORDER and arranging
- 5. The Periodic Table is made up by placing the elements in ATOMIC NUMBER ORDER and arranging
- 6. The Periodic Table is made up by placing the elements in ATOMIC NUMBER ORDER and arranging
- 7. The outer electron configuration is a periodic function... it repeats every so often Because many physical
- 8. The outer electron configuration is a periodic function... it repeats every so often Because many physical
- 9. ELECTRONIC CONFIGURATION
- 10. ELECTRONIC CONFIGURATION The Aufbau principle states that… “ELECTRONS ENTER THE LOWEST AVAILABLE ENERGY LEVEL” . In
- 11. BONDING & STRUCTURE
- 12. ELEMENTS Moving from left to right the elements go from highly electropositive metals through metalloids with
- 13. ELEMENTS Moving from left to right the elements go from highly electropositive metals through metalloids with
- 14. ATOMIC RADIUS
- 15. ATOMIC RADIUS Decreases across a given period The nuclear charge increases by +1 each time. As
- 16. ATOMIC RADIUS Decreases across a given period The nuclear charge increases by +1 each time. As
- 17. 1st IONISATION ENERGY
- 18. FIRST IONISATION ENERGY It is a measure of the energy required to remove an outer shell
- 19. FIRST IONISATION ENERGY It is a measure of the energy required to remove an outer shell
- 20. FIRST IONISATION ENERGY INCREASES across a period Nuclear charge increases by one each time. Each extra
- 21. FIRST IONISATION ENERGY There is a DROP in the value for sulphur. The extra electron has
- 22. ELECTRICAL CONDUCTIVITY
- 23. ELECTRICAL CONDUCTIVITY Substances conduct electricity when ions or electrons are free to move. Periods Overall decrease
- 24. ELECTRONEGATIVITY
- 25. ELECTRONEGATIVITY A measure of the attraction an atom has for the pair of electrons in a
- 26. MELTING POINT
- 27. MELTING POINT 3000 2500 2000 1500 1000 500 0 Boiling and melting points are a measure
- 28. MELTING POINT 3000 2500 2000 1500 1000 500 0 Boiling and melting points are a measure
- 29. MELTING POINT 3000 2500 2000 1500 1000 500 0 Boiling and melting points are a measure
- 30. MELTING POINT 3000 2500 2000 1500 1000 500 0 Boiling and melting points are a measure
- 31. MELTING POINT 3000 2500 2000 1500 1000 500 0 Boiling and melting points are a measure
- 32. MELTING POINT 3000 2500 2000 1500 1000 500 0 Boiling and melting points are a measure
- 33. MELTING POINT Boiling and melting points are a measure of the energy required to separate the
- 34. MELTING POINT TREND - NON METALS P4 S8 Cl2 Ar relative mass 124 256 71 40
- 35. 3000 2500 2000 1500 1000 500 0 Boiling points tend to be a better measure and
- 36. REVISION CHECK What should you be able to do? Recall and explain the trend in electronic
- 37. You need to go over the relevant topic(s) again Click on the button to return to
- 38. WELL DONE! Try some past paper questions
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