names,symbols and valencies of 118 elements

The names and valency of elements are as follows:

Element Valence
Hydrogen (-1), +1
Helium 0
Lithium +1
Beryllium +2
Boron -3, +3
Carbon. (+2), +4
Nitrogen -3, -2, -1, (+1), +2, +3, +4, +5
Oxygen -2
Fluorine -1, (+1)
Neon 0
Sodium +1
Magnesium +2
Aluminum +3
Silicon -4, (+2), +4
Phosphorus -3, +1, +3, +5
Sulphur -2, +2, +4, +6
Chlorine -1, +1, (+2), +3, (+4), +5, +7
Argon 0
Potassium +1
Calcium +2
Scandium +3
Titanium +2, +3, +4
Vanadium +2, +3, +4, +5
Chromium +2, +3, +6
Manganese +2, (+3), +4, (+6), +7
Iron +2, +3, (+4), (+6)
Cobalt +2, +3, (+4)
Nickel (+1), +2, (+3), (+4)
Copper +1, +2, (+3)
Zinc +2
Gallium (+2). +3
Germanium -4, +2, +4
Arsenic -3, (+2), +3, +5
Selenium -2, (+2), +4, +6
Bromine -1, +1, (+3), (+4), +5
Krypton 0
Rubidium +1
Strontium +2
Yttrium +3
Zirconium (+2), (+3), +4
Niobium (+2), +3, (+4), +5
Molybdenum (+2), +3, (+4), (+5), +6
Technetium +6
Ruthenium (+2), +3, +4, (+6), (+7), +8
Rhodium (+2), (+3), +4, (+6)
Palladium +2, +4, (+6)
Silver +1, (+2), (+3)
Cadmium (+1), +2
Indium (+1), (+2), +3
Tin +2, +4
Antimony -3, +3, (+4), +5
Tellurium -2, (+2), +4, +6
Iodine -1, +1, (+3), (+4), +5, +7
Xenon 0
Cesium +1
Barium +2
Lanthanum +3
Cerium +3, +4
Praseodymium +3
Neodymium +3, +4
Promethium +3
Samarium (+2), +3
Gadolinium +3
Terbium +3, +4
Dysprosium +3
Erbium +3
Thulium (+2), +3
Ytterbium (+2), +3
Lutetium +3
Hafnium +4
Tantalum (+3), (+4), +5
Tungsten (+2), (+3), (+4), (+5), +6
Rhenium (-1), (+1), +2, (+3), +4, (+5), +6, +7
Osmium (+2), +3, +4, +6, +8
Iridium (+1), (+2), +3, +4, +6
Platinum (+1), +2, (+3), +4, +6
Gold +1, (+2), +3
Mercury +1, +2
Thallium +1, (+2), +3
Lead +2, +4
Bismuth (-3), (+2), +3, (+4), (+5)
Polonium (-2), +2, +4, (+6)
Astatine ?
Radon 0
Francium ?
Radium +2
Actinium +3
Thorium +4
Protactinium +5
Uranium (+2), +3, +4, (+5), +6

Knew only till 93...
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