elements with their valency

Number
ElementValence
1Hydrogen(-1), +1
2Helium0
3Lithium+1
4Beryllium+2
5Boron-3, +3
6Carbon(+2), +4
7Nitrogen-3, -2, -1, (+1), +2, +3, +4, +5
8Oxygen-2
9Fluorine-1, (+1)
10Neon0
11Sodium+1
12Magnesium+2
13Aluminum+3
14Silicon-4, (+2), +4
15Phosphorus-3, +1, +3, +5
16Sulfur-2, +2, +4, +6
17Chlorine-1, +1, (+2), +3, (+4), +5, +7
18Argon0
19Potassium+1
20Calcium+2
21Scandium+3
22Titanium+2, +3, +4
23Vanadium+2, +3, +4, +5
24Chromium+2, +3, +6
25Manganese+2, (+3), +4, (+6), +7
26Iron+2, +3, (+4), (+6)
27Cobalt+2, +3, (+4)
28Nickel(+1), +2, (+3), (+4)
29Copper+1, +2, (+3)
30Zinc+2
31Gallium(+2). +3
32Germanium-4, +2, +4
33Arsenic-3, (+2), +3, +5
34Selenium-2, (+2), +4, +6
35Bromine-1, +1, (+3), (+4), +5
36Krypton0
37Rubidium+1
38Strontium+2
39Yttrium+3
40Zirconium(+2), (+3), +4
41Niobium(+2), +3, (+4), +5
42Molybdenum(+2), +3, (+4), (+5), +6
43Technetium+6
44Ruthenium(+2), +3, +4, (+6), (+7), +8
45Rhodium(+2), (+3), +4, (+6)
46Palladium+2, +4, (+6)
47Silver+1, (+2), (+3)
48Cadmium(+1), +2
49Indium(+1), (+2), +3
50Tin+2, +4
51Antimony-3, +3, (+4), +5
52Tellurium-2, (+2), +4, +6
53Iodine-1, +1, (+3), (+4), +5, +7
54Xenon0
55Cesium+1
56Barium+2
57Lanthanum+3
58Cerium+3, +4
59Praseodymium+3
60Neodymium+3, +4
61Promethium+3
62Samarium(+2), +3
63Europium(+2), +3
64Gadolinium+3
65Terbium+3, +4
66Dysprosium+3
67Holmium+3
68Erbium+3
69Thulium(+2), +3
70Ytterbium(+2), +3
71Lutetium+3
72Hafnium+4
73Tantalum(+3), (+4), +5
74Tungsten(+2), (+3), (+4), (+5), +6
75Rhenium(-1), (+1), +2, (+3), +4, (+5), +6, +7
76Osmium(+2), +3, +4, +6, +8
77Iridium(+1), (+2), +3, +4, +6
78Platinum(+1), +2, (+3), +4, +6
79Gold+1, (+2), +3
80Mercury+1, +2
81Thallium+1, (+2), +3
82Lead+2, +4
83Bismuth(-3), (+2), +3, (+4), (+5)
84Polonium(-2), +2, +4, (+6)
85Astatine?
86Radon0
87Francium?
88Radium+2
89Actinium+3
90Thorium+4
91Protactinium+5
92Uranium(+2), +3, +4, (+5), +6

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