Содержание
- 2. A repeating pattern of chemical properties in elements is called periodicity. What is the periodicity?
- 3. The periodicity in properties of elements can be explained by the the repetition of outermost shell
- 4. Atomic number and electrons The properties of elements are influenced by the number and arrangement of
- 5. Electron shells Electrons are arranged in shells around an atom’s nucleus. This electron arrangement is written
- 6. Electrons in period 1 Elements in period 1 only have electrons in the first shell. Why
- 7. Elements in period 2 all have a complete first shell. Аt second shell the number of
- 8. 2,8,1 2,8,2 2,8,3 2,8,4 2,8,5 2,8,6 2,8,7 2,8,8 Elements in period 3 have complete first and
- 9. Patterns of electron arrangements Consider the electron arrangements of the first 20 elements in the periodic
- 10. Electron trends in the periodic table Trends down a group: By the start of new period
- 11. Electron trends in the periodic table The number of a group is the same as the
- 12. What is the electronic configuration?
- 13. As you know, all electrons are distributed among the shells and subshells. The arrangement of electrons
- 14. s s p s p s d p s d p s f d p s
- 15. s s p s p s d p s d p s f d p s
- 16. 1s 2s p 3s p 4s d p 5s d p 6s f d p 7s
- 17. 1s2 2s2 p 3s2 p 4s2 d p 5s2 d p 6s2 f d p 7s2
- 18. 1s2 2s2 2p 3s2 3p 4s2 d 4p 5s2 d 5p 6s2 f d 6p 7s2
- 19. 1s2 2s2 2p6 3s2 3p6 4s2 d 4p6 5s2 d 5p6 6s2 f d 6p6 7s2
- 20. 1s2 2s2 2p6 3s2 3p6 4s2 3d 4p6 5s2 4d 5p6 6s2 f 5d 6p6 7s2
- 21. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 f 5d10 6p6 7s2
- 22. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f 5d10 6p6 7s2
- 23. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2
- 24. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2
- 25. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2
- 26. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2
- 27. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2
- 28. According to their electronic configuration ending, elements can also be classified as s-block, p-block, d-block and
- 29. Task 2. Work in pairs. Create the sentences from mixed-up words and share your answer with
- 30. Answer: Task 2 A repeating pattern of chemical properties in elements is called periodicity. All the
- 31. Task 3. Find the mistake. Here 4 sentences. In each sentences 2 words are changed their
- 32. Task 3. Find the mistake. Here 4 sentences. In each sentences 2 words are changed their
- 33. Task 4. Electron trends in the periodic table. Write 4 sentences and make best matching of
- 34. Task 4. Electron trends in the periodic table. Write 4 sentences and make best matching of
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