META Classes

26/12/2025

Water cycle

23/12/2025

of conservation of mass
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23/12/2025

Periodic Table (1–118)

1. H – Hydrogen – 1.008

2. He – Helium – 4.00

3. Li – Lithium – 6.94

4. Be – Beryllium – 9.01

5. B – Boron – 10.81

6. C – Carbon – 12.01

7. N – Nitrogen – 14.01

8. O – Oxygen – 16.00

9. F – Fluorine – 19.00

10. Ne – Neon – 20.18

11. Na – Sodium – 22.99

12. Mg – Magnesium – 24.31

13. Al – Aluminium – 26.98

14. Si – Silicon – 28.09

15. P – Phosphorus – 30.97

16. S – Sulfur – 32.06

17. Cl – Chlorine – 35.45

18. Ar – Argon – 39.95

18. K – Potassium – 39.10

20. Ca – Calcium – 40.08

21. Sc – Scandium – 44.96

22.Ti – Titanium – 47.87

23. V – Vanadium – 50.94

24. Cr – Chromium – 52.00

25. Mn – Manganese – 54.94

26. Fe – Iron – 55.85

27. Co – Cobalt – 58.93

28. Ni – Nickel – 58.69

29. Cu – Copper – 63.55

30. Zn – Zinc – 65.38

31. Ga – Gallium – 69.72

32. Ge – Germanium – 72.63

33. As – Arsenic – 74.92

34. Se – Selenium – 78.97

35. Br – Bromine – 79.90

36. Kr – Krypton – 83.80

37. Rb – Rubidium – 85.47

38. Sr – Strontium – 87.62

39. Y – Yttrium – 88.91

40. Zr – Zirconium – 91.22

31. Nb – Niobium – 92.91

42. Mo – Molybdenum – 95.95

43. Tc – Technetium – 98

44. Ru – Ruthenium – 101.07

45. Rh – Rhodium – 102.91

46. Pd – Palladium – 106.42

47. Ag – Silver – 107.87

48. Cd – Cadmium – 112.41

49. In – Indium – 114.82

50. Sn – Tin – 118.71

51. Sb – Antimony – 121.76

52. Te – Tellurium – 127.60

53. I – Iodine – 126.90

54. Xe – Xenon – 131.29

55. Cs – Cesium – 132.91

56. Ba – Barium – 137.33

57. La – Lanthanum – 138.91

58. Ce – Cerium – 140.12

59. Pr – Praseodymium – 140.91

60.Nd – Neodymium – 144.24

61. Pm – Promethium – 145

62. Sm – Samarium – 150.36

63. Eu – Europium – 151.96

63. Gd – Gadolinium – 157.25

65. Tb – Terbium – 158.93

66. Dy – Dysprosium – 162.50

67. Ho – Holmium – 164.93

68. Er – Erbium – 167.26

69. Tm – Thulium – 168.93

70. Yb – Ytterbium – 173.05

71. Lu – Lutetium – 174.97

72. Hf – Hafnium – 178.49

73. Ta – Tantalum – 180.95

74. W – Tungsten – 183.84

75. Re – Rhenium – 186.21

76. Os – Osmium – 190.23

77. Ir – Iridium – 192.22

78. Pt – Platinum – 195.08

79. Au – Gold – 196.97

80. Hg – Mercury – 200.59

81. Tl – Thallium – 204.38

82. Pb – Lead – 207.2

83. Bi – Bismuth – 208.98

84. Po – Polonium – 209

85. At – Astatine – 210

86. Rn – Radon – 222

87. Fr – Francium – 223

88. Ra – Radium – 226

89.Ac – Actinium – 227

90. Th – Thorium – 232.04

91. Pa – Protactinium – 231.04

92. U – Uranium – 238.03

93. Np – Neptunium – 237

94. Pu – Plutonium – 244

95. Am – Americium – 243

96. Cm – Curium – 247

97. Bk – Berkelium – 247

98. Cf – Californium – 251

99. Es – Einsteinium – 252

100 Fm – Fermium – 257

101. Md – Mendelevium – 258

102. No – Nobelium – 259

103. Lr – Lawrencium – 266

104. Rf – Rutherfordium – 267

105. Db – Dubnium – 268

106. Sg – Seaborgium – 269

107. Bh – Bohrium – 270

108. Hs – Hassium – 277

109. Mt – Meitnerium – 278

110. Ds – Darmstadtium – 281

111. Rg – Roentgenium – 282

112. Cn – Copernicium – 285

113. Nh – Nihonium – 286

114. Fl – Flerovium – 289

115. Mc – Moscovium – 290

116. Lv – Livermorium – 293

117. Ts – Tennessine – 294

118.Og – Oganesson – 294

23/12/2025

21/12/2025

A Small Story

Once upon a time, in a small village, there lived a curious boy named Aarav. He loved asking questions like “Why does iron rust?” and “How does soap clean dirt?”
One day, Aarav’s teacher gave him a small chemistry kit. Excited, he mixed vinegar and baking soda. Suddenly—fizz! Bubbles came out. Aarav learned that this was a chemical reaction producing carbon dioxide gas.
The next day, he observed that a cut apple turned brown. His teacher explained oxidation. Aarav realized that chemistry was not only in books, but everywhere around him—in food, air, water, and even his own body.
Years later, Aarav became a chemist. He created medicines that saved lives and eco-friendly products that protected nature. He always said,

“Chemistry is not just a subject; it is the science of life.”

And that curiosity changed the world 🌍🔬

20/12/2025

potential
#

20/12/2025

of water of water

19/12/2025

Define wurtz reaction

18/12/2025

of reactions

18/12/2025

Significance of Oxidation-Reduction Reactions

18/12/2025

Write Atomic number of platinum

18/12/2025

Write electronic configuration of copper