3. NIRUPAMA ROY Assistant Teacher South Point School & College

4. Class-VIIIChemistryChapter - Seven Periodic Table

5. The SS will be able to define the Periodic Table They can state the characteristics of the periodic table They will be able to locate the position of any element in the table

8. Fertilizer Edible Salt Na = Sodium K = Potassium

9. Na Electron Configuration of sodium and Potassium

10. K Na Rb Cs Solid

13. Xe Kr He Rn Inert Gas

15. Select an element

16. Li BeBCNONe F Period 2

17. H Li Na K Gp I

18. Horizontal Row Vertical Column Horizontal Row = Period Vertical Column = Group

19. Symbol H Li Na K Rb Cs Fr Atomic Number 1 3 11 19 37 55 87 KLMNOPQ 1 21 281 2881 281881 28 81 28 321881 Na 1 st Orbit2 nd Orbit3 rd Orbit 281 1 st Orbit2 nd Orbit3 rd Orbit4thOrbit 2881

20. Symbol Be Mg Ca Sr Ba Ra Atomic Number 4 12 20 38 56 88 KLMNOPQ 22 282 2882 281882 28 82 28 321882 Ca 1 st Orbit2 nd Orbit3 rd Orbit4 th Orbit 2882

21. Symbol He Ne Ar Kr Xe Rn Atomic Number 2 10 18 36 54 86 KLMNOPQ 2 28 288 28188 28 8 28 32188

22. Dimitri Ivanovich Mendeleev

23. Select an element

24. Name: Hydrogen Symbol: H Atomic Number: 1 Atomic Mass: 1.00794 amu Melting Point: -259.14 °C (14.009985 °K, -434.45203 °F) Boiling Point: -252.87 °C (20.280005 °K, -423.166 °F)

25. Name: Helium Symbol: He Atomic Number: 2 Atomic Mass: 4.002602 amu Melting Point: -272.0 °C (1.15 °K, -457.6 °F) Boiling Point: -268.6 °C (4.549994 °K, -451.48 °F)

26. Name: Lithium Symbol: Li Atomic Number: 3 Atomic Mass: 6.941 amu Melting Point: 180.54 °C (453.69 °K, 356.972 °F) Boiling Point: 1347.0 °C (1620.15 °K, 2456.6 °F)

27. Name: Beryllium Symbol: Be Atomic Number: 4 Atomic Mass: 9.012182 amu Melting Point: 1278.0 °C (1551.15 °K, 2332.4 °F) Boiling Point: 2970.0 °C (3243.15 °K, 5378.0 °F)

28. Name: Boron Symbol: B Atomic Number: 5 Atomic Mass: 10.811 amu Melting Point: 2300.0 °C (2573.15 °K, 4172.0 °F) Boiling Point: 2550.0 °C (2823.15 °K, 4622.0 °F)

29. Name: Carbon Symbol: C Atomic Number: 6 Atomic Mass: 12.0107 amu Melting Point: 3500.0 °C (3773.15 °K, 6332.0 °F) Boiling Point: 4827.0 °C (5100.15 °K, 8720.6 °F)

30. Name: Nitrogen Symbol: N Atomic Number: 7 Atomic Mass: 14.00674 amu Melting Point: -209.9 °C (63.250008 °K, -345.81998 °F) Boiling Point: -195.8 °C (77.35 °K, -320.44 °F)

31. Name: Oxygen Symbol: O Atomic Number: 8 Atomic Mass: 15.9994 amu Melting Point: -218.4 °C (54.750008 °K, -361.12 °F) Boiling Point: -183.0 °C (90.15 °K, -297.4 °F)

32. Name: Fluorine Symbol: F Atomic Number: 9 Atomic Mass: 18.998404 amu Melting Point: -219.62 °C (53.530006 °K, -363.31598 °F) Boiling Point: -188.14 °C (85.01 °K, -306.652 °F)

33. Name: Neon Symbol: Ne Atomic Number: 10 Atomic Mass: 20.1797 amu Melting Point: -248.6 °C (24.549994 °K, -415.48 °F) Boiling Point: -246.1 °C (27.049994 °K, -410.98 °F)

34. Name: Sodium Symbol: Na Atomic Number: 11 Atomic Mass: 22.98977 amu Melting Point: 97.8 °C (370.95 °K, 208.04001 °F) Boiling Point: 552.9 °C (826.05005 °K, 1027.2201 °F)

35. Name: Magnesium Symbol: Mg Atomic Number: 12 Atomic Mass: 24.305 amu Melting Point: 650.0 °C (923.15 °K, 1202.0 °F) Boiling Point: 1107.0 °C (1380.15 °K, 2024.6 °F)

36. Name: Aluminum Symbol: Al Atomic Number: 13 Atomic Mass: 26.981539 amu Melting Point: 660.37 °C (933.52 °K, 1220.666 °F) Boiling Point: 2467.0 °C (2740.15 °K, 4472.6 °F)

37. Name: Silicon Symbol: Si Atomic Number: 14 Atomic Mass: 28.0855 amu Melting Point: 1410.0 °C (1683.15 °K, 2570.0 °F) Boiling Point: 2355.0 °C (2628.15 °K, 4271.0 °F)

38. Name: Phosphorus Symbol: P Atomic Number: 15 Atomic Mass: 30.97376 amu Melting Point: 44.1 °C (317.25 °K, 111.38 °F) Boiling Point: 280.0 °C (553.15 °K, 536.0 °F)

39. Name: Sulfur Symbol: S Atomic Number: 16 Atomic Mass: 32.066 amu Melting Point: 112.8 °C (385.95 °K, 235.04001 °F) Boiling Point: 444.6 °C (717.75 °K, 832.28 °F)

40. Name: Chlorine Symbol: Cl Atomic Number: 17 Atomic Mass: 35.4527 amu Melting Point: -100.98 °C (172.17 °K, -149.764 °F) Boiling Point: -34.6 °C (238.55 °K, -30.279997 °F)

41. Name: Argon Symbol: Ar Atomic Number: 18 Atomic Mass: 39.948 amu Melting Point: -189.3 °C (83.85 °K, -308.74 °F) Boiling Point: -186.0 °C (87.15 °K, -302.8 °F)

42. Name: Potassium Symbol: K Atomic Number: 19 Atomic Mass: 39.0983 amu Melting Point: 63.65 °C (336.8 °K, 146.57 °F) Boiling Point: 774.0 °C (1047.15 °K, 1425.2 °F)

43. Name: Calcium Symbol: Ca Atomic Number: 20 Atomic Mass: 40.078 amu Melting Point: 839.0 °C (1112.15 °K, 1542.2 °F) Boiling Point: 1484.0 °C (1757.15 °K, 2703.2 °F)

44. Name: Gallium Symbol: Ga Atomic Number: 31 Atomic Mass: 69.723 amu Melting Point: 29.78 °C (302.93 °K, 85.604004 °F) Boiling Point: 2403.0 °C (2676.15 °K, 4357.4 °F)

45. Name: Germanium Symbol: Ge Atomic Number: 32 Atomic Mass: 72.61 amu Melting Point: 937.4 °C (1210.55 °K, 1719.3201 °F) Boiling Point: 2830.0 °C (3103.15 °K, 5126.0 °F)

46. Name: Arsenic Symbol: As Atomic Number: 33 Atomic Mass: 74.9216 amu Melting Point: 817.0 °C (1090.15 °K, 1502.6 °F) Boiling Point: 613.0 °C (886.15 °K, 1135.4 °F)

47. Name: Selenium Symbol: Se Atomic Number: 34 Atomic Mass: 78.96 amu Melting Point: 217.0 °C (490.15 °K, 422.6 °F) Boiling Point: 684.9 °C (958.05005 °K, 1264.8201 °F)

48. Name: Bromine Symbol: Br Atomic Number: 35 Atomic Mass: 79.904 amu Melting Point: -7.2 °C (265.95 °K, 19.04 °F) Boiling Point: 58.78 °C (331.93 °K, 137.804 °F)

49. Name: Krypton Symbol: Kr Atomic Number: 36 Atomic Mass: 83.8 amu Melting Point: -157.2 °C (115.950005 °K, -250.95999 °F) Boiling Point: -153.4 °C (119.75001 °K, -244.12 °F)

50. Name: Rubidium Symbol: Rb Atomic Number: 37 Atomic Mass: 85.4678 amu Melting Point: 38.89 °C (312.04 °K, 102.002 °F) Boiling Point: 688.0 °C (961.15 °K, 1270.4 °F)

51. Name: Strontium Symbol: Sr Atomic Number: 38 Atomic Mass: 87.62 amu Melting Point: 769.0 °C (1042.15 °K, 1416.2 °F) Boiling Point: 1384.0 °C (1657.15 °K, 2523.2 °F)

52. Name: Indium Symbol: In Atomic Number: 49 Atomic Mass: 114.818 amu Melting Point: 156.61 °C (429.76 °K, 313.898 °F) Boiling Point: 2000.0 °C (2273.15 °K, 3632.0 °F)

53. Name: Tin Symbol: Sn Atomic Number: 50 Atomic Mass: 118.71 amu Melting Point: 231.9 °C (505.05 °K, 449.41998 °F) Boiling Point: 2270.0 °C (2543.15 °K, 4118.0 °F)

54. Name: Antimony Symbol: Sb Atomic Number: 51 Atomic Mass: 121.76 amu Melting Point: 630.0 °C (903.15 °K, 1166.0 °F) Boiling Point: 1750.0 °C (2023.15 °K, 3182.0 °F)

55. Name: Tellurium Symbol: Te Atomic Number: 52 Atomic Mass: 127.6 amu Melting Point: 449.5 °C (722.65 °K, 841.1 °F) Boiling Point: 989.8 °C (1262.95 °K, 1813.64 °F)

56. Name: Iodine Symbol: I Atomic Number: 53 Atomic Mass: 126.90447 amu Melting Point: 113.5 °C (386.65 °K, 236.3 °F) Boiling Point: 184.0 °C (457.15 °K, 363.2 °F)

57. Name: Xenon Symbol: Xe Atomic Number: 54 Atomic Mass: 131.29 amu Melting Point: -111.9 °C (161.25 °K, -169.42 °F) Boiling Point: -108.1 °C (165.05 °K, -162.58 °F)

58. Name: Cesium Symbol: Cs Atomic Number: 55 Atomic Mass: 132.90546 amu Melting Point: 28.5 °C (301.65 °K, 83.3 °F) Boiling Point: 678.4 °C (951.55005 °K, 1253.12 °F)

59. Name: Barium Symbol: Ba Atomic Number: 56 Atomic Mass: 137.327 amu Melting Point: 725.0 °C (998.15 °K, 1337.0 °F) Boiling Point: 1140.0 °C (1413.15 °K, 2084.0 °F)

60. Name: Thulium Symbol: Tm Atomic Number: 69 Atomic Mass: 168.9342 amu Melting Point: 1545.0 °C (1818.15 °K, 2813.0 °F) Boiling Point: 1727.0 °C (2000.15 °K, 3140.6 °F)

61. Name: Thallium Symbol: Tl Atomic Number: 81 Atomic Mass: 204.3833 amu Melting Point: 303.5 °C (576.65 °K, 578.3 °F) Boiling Point: 1457.0 °C (1730.15 °K, 2654.6 °F)

62. Name: Lead Symbol: Pb Atomic Number: 82 Atomic Mass: 207.2 amu Melting Point: 327.5 °C (600.65 °K, 621.5 °F) Boiling Point: 1740.0 °C (2013.15 °K, 3164.0 °F)

63. Name: Bismuth Symbol: Bi Atomic Number: 83 Atomic Mass: 208.98038 amu Melting Point: 271.3 °C (544.45 °K, 520.33997 °F) Boiling Point: 1560.0 °C (1833.15 °K, 2840.0 °F)

64. Name: Polonium Symbol: Po Atomic Number: 84 Atomic Mass: (209.0) amu Melting Point: 254.0 °C (527.15 °K, 489.2 °F) Boiling Point: 962.0 °C (1235.15 °K, 1763.6 °F)

65. Name: Astatine Symbol: At Atomic Number: 85 Atomic Mass: (210.0) amu Melting Point: 302.0 °C (575.15 °K, 575.6 °F) Boiling Point: 337.0 °C (610.15 °K, 638.6 °F)

66. Name: Radon Symbol: Rn Atomic Number: 86 Atomic Mass: (222.0) amu Melting Point: -71.0 °C (202.15 °K, -95.8 °F) Boiling Point: -61.8 °C (211.35 °K, -79.24 °F)

67. Name: Francium Symbol: Fr Atomic Number: 87 Atomic Mass: (223.0) amu Melting Point: 27.0 °C (300.15 °K, 80.6 °F) Boiling Point: 677.0 °C (950.15 °K, 1250.6 °F)

68. Name: Radium Symbol: Ra Atomic Number: 88 Atomic Mass: (226.0) amu Melting Point: 700.0 °C (973.15 °K, 1292.0 °F) Boiling Point: 1737.0 °C (2010.15 °K, 3158.6 °F)

69. Name: Actinium Symbol: Ac Atomic Number: 89 Atomic Mass: (227.0) amu Melting Point: 1050.0 °C (1323.15 °K, 1922.0 °F) Boiling Point: 3200.0 °C (3473.15 °K, 5792.0 °F)

70. Group A Group B Group C Group D Group WorkDetermine the period and group of the following elements

72. Acknowledgement www.youtube.com www.google.com www.wikipedia.com www.infokosh.gov.bd