Here is a list of all the known chemical elements, along with their symbols and atomic numbers, as of my last update in 2023:
1. Hydrogen (H) - 1
2. Helium (He) - 2
3. Lithium (Li) - 3
4. Beryllium (Be) - 4
5. Boron (B) - 5
6. Carbon (C) - 6
7. Nitrogen (N) - 7
8. Oxygen (O) - 8
9. Fluorine (F) - 9
10. Neon (Ne) - 10
11. Sodium (Na) - 11
12. Magnesium (Mg) - 12
13. Aluminum (Al) - 13
14. Silicon (Si) - 14
15. Phosphorus (P) - 15
16. Sulfur (S) - 16
17. Chlorine (Cl) - 17
18. Argon (Ar) - 18
19. Potassium (K) - 19
20. Calcium (Ca) - 20
21. Scandium (Sc) - 21
22. Titanium (Ti) - 22
23. Vanadium (V) - 23
24. Chromium (Cr) - 24
25. Manganese (Mn) - 25
26. Iron (Fe) - 26
27. Cobalt (Co) - 27
28. Nickel (Ni) - 28
29. Copper (Cu) - 29
30. Zinc (Zn) - 30
31. Gallium (Ga) - 31
32. Germanium (Ge) - 32
33. Arsenic (As) - 33
34. Selenium (Se) - 34
35. Bromine (Br) - 35
36. Krypton (Kr) - 36
37. Rubidium (Rb) - 37
38. Strontium (Sr) - 38
39. Yttrium (Y) - 39
40. Zirconium (Zr) - 40
41. Niobium (Nb) - 41
42. Molybdenum (Mo) - 42
43. Technetium (Tc) - 43
44. Ruthenium (Ru) - 44
45. Rhodium (Rh) - 45
46. Palladium (Pd) - 46
47. Silver (Ag) - 47
48. Cadmium (Cd) - 48
49. Indium (In) - 49
50. Tin (Sn) - 50
51. Antimony (Sb) - 51
52. Tellurium (Te) - 52
53. Iodine (I) - 53
54. Xenon (Xe) - 54
55. Cesium (Cs) - 55
56. Barium (Ba) - 56
57. Lanthanum (La) - 57
58. Cerium (Ce) - 58
59. Praseodymium (Pr) - 59
60. Neodymium (Nd) - 60
61. Promethium (Pm) - 61
62. Samarium (Sm) - 62
63. Europium (Eu) - 63
64. Gadolinium (Gd) - 64
65. Terbium (Tb) - 65
66. Dysprosium (Dy) - 66
67. Holmium (Ho) - 67
68. Erbium (Er) - 68
69. Thulium (Tm) - 67
70. Ytterbium (Yb) - 70
71. Lutetium (Lu) - 71
72. Hafnium (Hf) - 72
73. Tantalum (Ta) - 73
74. Tungsten (W) - 74
75. Rhenium (Re) - 75
76. Osmium (Os) - 76
77. Iridium (Ir) - 77
78. Platinum (Pt) - 78
79. Gold (Au) - 79
80. Mercury (Hg) - 80
81. Thallium (Tl) - 81
82. Lead (Pb) - 82
83. Bismuth (Bi) - 83
84. Polonium (Po) - 84
85. Astatine (At) - 85
86. Radon (Rn) - 86
87. Francium (Fr) - 87
88. Radium (Ra) - 88
89. Actinium (Ac) - 89
90. Thorium (Th) - 90
91. Protactinium (Pa) - 91
92. Uranium (U) - 92
93. Neptunium (Np) - 93
94. Plutonium (Pu) - 94
95. Americium (Am) - 95
96. Curium (Cm) - 96
97. Berkelium (Bk) - 97
98. Californium (Cf) - 98
99. Einsteinium (Es) - 99
100. Fermium (Fm) - 100
101. Mendelevium (Md) - 101
102. Nobelium (No) - 102
103. Lawrencium (Lr) - 103
104. Rutherfordium (Rf) - 104
105. Dubnium (Db) - 105
106. Seaborgium (Sg) - 106
107. Bohrium (Bh) - 107
108. Hassium (Hs) - 108
109. Meitnerium (Mt) - 109
110. Darmstadtium (Ds) - 110
111. Roentgenium (Rg) - 111
112. Copernicium (Cn) - 112
113. Nihonium (Nh) - 113
114. Flerovium (Fl) - 114
115. Moscovium (Mc) - 115
116. Livermorium (Lv) - 116
117. Tennessine (Ts) - 117
118. Oganesson (Og) - 118
These elements form the basis of all matter and are organized in the periodic table according to their atomic number, electron configurations, and recurring chemical properties.