Name: Scandium Symbol: Sc Atomic Number: 21 Atomic Mass: 44.95591 amu Number of Protons/Electrons: 21 Number of Neutrons: 24 Date of Discovery: 1879 Discoverer: Lars Nilson Uses: No uses known Classification: Transition Metal
Vanadium
Name: Vanadium Symbol: V Atomic Number: 23 Atomic Mass: 50.9415 amu Number of Protons/Electrons: 23 Number of Neutrons: 28 Date of Discovery: 1830 Discoverer: Nils Sefstrom Uses: catalyst, dye, color-fixer Classification: Transition Metal
Manganese
Name: Manganese Symbol: Mn Atomic Number: 25 Atomic Mass: 54.93805 amu Number of Protons/Electrons: 25 Number of Neutrons: 30 Date of Discovery: 1774 Discoverer: Johann Gahn Uses: steel, batteries, ceramics Classification: Transition Metal
Cobalt
Name: Cobalt Symbol: Co Atomic Number: 27 Atomic Mass: 58.9332 amu Number of Protons/Electrons: 27 Number of Neutrons: 32 Date of Discovery: 1737 Discoverer: George Brandt Uses: magnets, ceramics, special glasses Classification: Transition Metal
Copper
Name: Copper Symbol: Cu Atomic Number: 29 Atomic Mass: 63.546 amu Number of Protons/Electrons: 29 Number of Neutrons: 35 Date of Discovery: Known to the ancients Discoverer: Unknown Uses: electrical conductor, jewelry, coins, plumbing Classification: Transition Metal
Yttrium
Name: Yttrium Symbol: Y Atomic Number: 39 Atomic Mass: 88.90585 amu Number of Protons/Electrons: 39 Number of Neutrons: 50 Date of Discovery: 1794 Discoverer: Johann Gadolin Uses: color TV's, radars Classification: Transition Metal
Niobium
Name: Niobium Symbol: Nb Atomic Number: 41 Atomic Mass: 92.90638 amu Number of Protons/Electrons: 41 Number of Neutrons: 52 Date of Discovery: 1801 Discoverer: Charles Hatchet Uses: No uses known Classification: Transition Metal
Technetium
Name: Technetium Symbol: Tc Atomic Number: 43 Atomic Mass: (98.0) amu Number of Protons/Electrons: 43 Number of Neutrons: 55 Date of Discovery: 1937 Discoverer: Carlo Perrier Uses: Tc-99m is used for radioactive tracing in medicine Classification: Transition Metal
Rhodium
Name: Rhodium Symbol: Rh Atomic Number: 45 Atomic Mass: 102.9055 amu Number of Protons/Electrons: 45 Number of Neutrons: 58 Date of Discovery: 1803 Discoverer: William Wollaston Uses: coatings Classification: Transition Metal
Silver
Name: Silver Symbol: Ag Atomic Number: 47 Atomic Mass: 107.8682 amu Number of Protons/Electrons: 47 Number of Neutrons: 61 Date of Discovery: Known to the ancients Discoverer: Unknown Uses: jewelry, photography, electrical conductor Classification: Transition Metal
Hafnium
Name: Hafnium Symbol: Hf Atomic Number: 72 Atomic Mass: 178.49 amu Number of Protons/Electrons: 72 Number of Neutrons: 106 Date of Discovery: 1923 Discoverer: Dirk Coster Uses: nuclear reactors Classification: Transition Metal
Tungsten
Name: Tungsten Symbol: W Atomic Number: 74 Atomic Mass: 183.84 amu Number of Protons/Electrons: 74 Number of Neutrons: 110 Date of Discovery: 1783 Discoverer: Fausto and Juan Jose de Elhuyar Uses: used widely in electronics industry Classification: Transition Metal
Osmium
Name: Osmium Symbol: Os Atomic Number: 76 Atomic Mass: 190.23 amu Number of Protons/Electrons: 76 Number of Neutrons: 114 Date of Discovery: 1803 Discoverer: Smithson Tenant Uses: tip gold pen points, instrument pivots, electrical light filaments Classification: Transition Metal
Platinum
Name: Platinum Symbol: Pt Atomic Number: 78 Atomic Mass: 195.078 amu Number of Protons/Electrons: 78 Number of Neutrons: 117 Date of Discovery: 1735 Discoverer: Julius Scaliger Uses: jewelry, containers, catalyst Classification: Transition Metal
Mercury
Name: Mercury Symbol: Hg Atomic Number: 80 Atomic Mass: 200.59 amu Number of Protons/Electrons: 80 Number of Neutrons: 121 Date of Discovery: Known to the ancients Discoverer: Unknown Uses: thermometers, barometers, fluorescent lamps, batteries Classification: Transition Metal
Dubnium
Name: Dubnium Symbol: Db Atomic Number: 105 Atomic Mass: (262.0) amu Number of Protons/Electrons: 105 Number of Neutrons: 157 Date of Discovery: 1970 Discoverer: Albert Ghiorso Uses: No uses known Classification: Transition Metal
Bohrium
Name: Bohrium Symbol: Bh Atomic Number: 107 Atomic Mass: (262.0) amu Number of Protons/Electrons: 107 Number of Neutrons: 155 Date of Discovery: 1976 Discoverer: Peter Armbruster, Gottfried Munzenber and others Uses: No uses known Classification: Transition Metal
Meitnerium
Name: Meitnerium Symbol: Mt Atomic Number: 109 Atomic Mass: (266.0) amu Number of Protons/Electrons: 109 Number of Neutrons: 157 Date of Discovery: 1982 Discoverer: Heavy Ion Research Laboratory Uses: No uses known Classification: Transition Metal
Titanium
Name: Titanium Symbol: Ti Atomic Number: 22 Atomic Mass: 47.867 amu Number of Protons/Electrons: 22 Number of Neutrons: 26 Date of Discovery: 1791 Discoverer: William Gregor Uses: paint, rubber, paper Classification: Transition Metal
Chromium
Name: Chromium Symbol: Cr Atomic Number: 24 Atomic Mass: 51.9961 amu Number of Protons/Electrons: 24 Number of Neutrons: 28 Date of Discovery: 1797 Discoverer: Louis Vauquelin Uses: Stainless steel Classification: Transition Metal
Iron
Name: Iron Symbol: Fe Atomic Number: 26 Atomic Mass: 55.845 amu Number of Protons/Electrons: 26 Number of Neutrons: 30 Date of Discovery: Known to the ancients Discoverer: Unknown Uses: steel, hemoglobin (carries oxygen in blood) Classification: Transition Metal
Nickel
Name: Nickel Symbol: Ni Atomic Number: 28 Atomic Mass: 58.6934 amu Number of Protons/Electrons: 28 Number of Neutrons: 31 Date of Discovery: 1751 Discoverer: Alex Cronstedt Uses: electroplating metal alloys, nickel-cadmium batteries Classification: Transition Metal
Zinc
Name: Zinc Symbol: Zn Atomic Number: 30 Atomic Mass: 65.39 amu Number of Protons/Electrons: 30 Number of Neutrons: 35 Date of Discovery: 1746 Discoverer: Andreas Marggraf Uses: metal coating, rust protection, brass, bronze, nickel Classification: Transition Metal
Zirconium
Name: Zirconium Symbol: Zr Atomic Number: 40 Atomic Mass: 91.224 amu Number of Protons/Electrons: 40 Number of Neutrons: 51 Date of Discovery: 1789 Discoverer: Martin Klaproth Uses: nuclear applications Classification: Transition Metal
Molybdenum
Name: Molybdenum Symbol: Mo Atomic Number: 42 Atomic Mass: 95.94 amu Number of Protons/Electrons: 42 Number of Neutrons: 54 Date of Discovery: 1778 Discoverer: Carl Wilhelm Scheele Uses: aircraft, missiles Classification: Transition Metal
Ruthenium
Name: Ruthenium Symbol: Ru Atomic Number: 44 Atomic Mass: 101.07 amu Number of Protons/Electrons: 44 Number of Neutrons: 57 Date of Discovery: 1844 Discoverer: Karl Klaus Uses: platinum alloys Classification: Transition Metal
Palladium
Name: Palladium Symbol: Pd Atomic Number: 46 Atomic Mass: 106.42 amu Number of Protons/Electrons: 46 Number of Neutrons: 60 Date of Discovery: 1803 Discoverer: William Wollaston Uses: jewelry, medical instruments Classification: Transition Metal
Cadmium
Name: Cadmium Symbol: Cd Atomic Number: 48 Atomic Mass: 112.411 amu Number of Protons/Electrons: 48 Number of Neutrons: 64 Date of Discovery: 1817 Discoverer: Fredrich Stromeyer Uses: poisonous, nickel-cadmium batteries Classification: Transition Metal
Tantalum
Name: Tantalum Symbol: Ta Atomic Number: 73 Atomic Mass: 180.9479 amu Number of Protons/Electrons: 73 Number of Neutrons: 108 Date of Discovery: 1802 Discoverer: Anders Ekeberg Uses: capacitors, camera lenses Classification: Transition Metal
Rhenium
Name: Rhenium Symbol: Re Atomic Number: 75 Atomic Mass: 186.207 amu Number of Protons/Electrons: 75 Number of Neutrons: 111 Date of Discovery: 1925 Discoverer: Walter Noddack Uses: filaments for mass spectrographs Classification: Transition Metal
Iridium
Name: Iridium Symbol: Ir Atomic Number: 77 Atomic Mass: 192.217 amu Number of Protons/Electrons: 77 Number of Neutrons: 115 Date of Discovery: 1804 Discoverer: S. Tenant Uses: tip gold pens, crucible and special containers Classification: Transition Metal
Gold
Name: Gold Symbol: Au Atomic Number: 79 Atomic Mass: 196.96655 amu Number of Protons/Electrons: 79 Number of Neutrons: 118 Date of Discovery: circa 3000 BC Discoverer: Unknown Uses: electronics, jewelry, coins Classification: Transition Metal
Rutherfordium
Name: Rutherfordium Symbol: Rf Atomic Number: 104 Atomic Mass: (261.0) amu Number of Protons/Electrons: 104 Number of Neutrons: 157 Date of Discovery: 1969 Discoverer: Albert Ghiorso Uses: No uses known Classification: Transition Metal
Seaborgium
Name: Seaborgium Symbol: Sg Atomic Number: 106 Atomic Mass: (263.0) amu Number of Protons/Electrons: 106 Number of Neutrons: 157 Date of Discovery: 1974 Discoverer: Albert Ghiorso Uses: No uses known Classification: Transition Metal
Hassium
Name: Hassium Symbol: Hs Atomic Number: 108 Atomic Mass: (265.0) amu Number of Protons/Electrons: 108 Number of Neutrons: 157 Date of Discovery: 1984 Discoverer: Peter Armbruster, Gottfried Munzenber and others Uses: No uses known Classification: Transition Metal