Element	Electron Configuration/Emission Spectrum	Common Compound(s)/Application(s)
21, Group 3 Scandium(Sc) (Transition Metal)		~ Sc-Al alloy is as strong as titanium, light as aluminium, and hard as ceramic. ~ ScI3 is a white-light source close to the composition of sunlight for good color-reproduction with TV cameras.
22, Group 4 Titanium(Ti) (Transition Metal)		~ Dioxide (TiO2)/Opaque Paints, Sun Tan Lotions ~ Tetrachloride (TiCl4)/Smoke Screens ~/Jet Engines, Rockets, and High Quality Tools
23, Group 5 Vanadium(V) (Transition Metal)
24, Group 6 Chromium(Cr) (Transition Metal)		~ Oxide (Cr2O3)/Green Pigment, Audio Tape Coating ~ Iron, Nickel Alloy/Stainless, Heating Elements ~/Energy Storage in Ruby Laser, Decorative and Protective Plating over Other Metals, Coloring in Gemstones, e.g., Alexandrite, Emerald, Ruby
25, Group 7 Manganese(Mn) (Transition Metal)
26, Group 8 Iron(Fe) (Transition Metal)		~ Nickel Alloy/Structural Material for Buildings ~ Tungsten, Vanadium Alloy/Cutting Tools at High Temperature ~ Manganese Alloy/Rifle Barrels, Power Shovels ~ Carbon, Silicon Alloy (Cast Iron)/Pipe, Machine Parts, Cook Wares ~/In Hemoglobins and Other Proteins
27, Group 9 Cobalt(Co) (Transition Metal)
28, Group 10 Nickel(Ni) (Transition Metal)		~ Oxide Hydroxide (NiOOH)/Cadmium Betteries ~/Layer of Protective Coating to Iron and Copper
29, Group 11 Copper(Cu) (Transition Metal)		~ Zinc Alloy (Brass)/Pipes, Wires, Gears, etc. ~ Tin or + Phosphorus, Manganese, Aluminum, Silicon Alloy (Bronze)/Ship Propellers, Bearings, Springs, Sculptures, Musical Instruments ~/Thermal and Electrical Conductors
30, Group 12 Zinc(Zn) (Transition Metal)
39, Group 3 Yttrium(Y) (Transition Metal)
40, Group 4 Zirconium(Zr) (Transition Metal)
41, Group 5 Niobium(Nb) (Transition Metal)
42, Group 6 Nolybdenum(Mo) (Transition Metal)
43, Group 7 Technetium(Tc) (Transition Metal)
44, Group 8 Ruthenium(Ru) (Transition Metal)
45, Group 9 Rhodium(Rh) (Transition Metal)
46, Group 10 Palladium(Pd) (Transition Metal)		~ /Automobile Catalytic Converter, Hydrogen Absorber, Cold Fusion (unsubstantiated claim)
47, Group 11 Silver(Ag) (Transition Metal)		~ Copper Alloy (Sterling Silver)/Jewelry ~ Mercury Solution/Tooth Fillings ~ Bromide (AgBr)/Photographic Films ~ Chloride (AgCl)/Photochromic Sunglass, Stained Glass, Photographic Films, Bandages ~ Iodide (AgI)/Clouding Seeding ~/Best Thermal and Electrical Conductors, Protective Coating, Most Reflective Mirror Material
48, Group 12 Cadmium(Cd) (Transition Metal)
57, Group 3 Lanthanum(La) (Lanthanide)
58, Group 3 Cerium(Ce) (Lanthanide)
59, Group 3 Praseodymium(Pr) (Lanthanide)
60, Group 3 Neodymium(Nd) (Lanthanide)
61, Group 3 Promethium(Pm) (Lanthanide)
62, Group 3 Samarium(Sm) (Lanthanide)
63, Group 3 Europium(Eu) (Lanthanide)
64, Group 3 Gadolinium(Gd) (Lanthanide)
65, Group 3 Terbium(Tb) (Lanthanide)
66, Group 3 Dysprosium(Dy) (Lanthanide)
67, Group 3 Holmium(Ho) (Lanthanide)
68, Group 3 Erbium(Er) (Lanthanide)
69, Group 3 Thulium(Tm) (Lanthanide)
70, Group 3 Ytterbium(Yb) (Lanthanide)
71, Group 3 Lutetium(Lu) (Lanthanide)
72, Group 4 Hafnium(Hf) (Transition Metal)
73, Group 5 Tantaium(Ta) (Transition Metal)
74, Group 6 Tungsten(W) (Transition Metal)
75, Group 7 Rhenium(Re) (Transition Metal)
76, Group 8 Osmium(Os) (Transition Metal)
77, Group 9 Iridium(Ir) (Transition Metal)
78, Group 10 Platinium(Pt) (Transition Metal)
79, Group 11 Gold(Au) (Transition Metal)		~ Nickel or Copper Alloy (18-carat gold)/Jewelry ~/Non-tarnishable Electrical Conductors, Basis of Monetary System
80, Group 12 Mercury(Hg) (Transition Metal)		~ Chloride (HgCl or HgCl2)/Fungicide, Pesticide ~/Thermostats, Thermometers, Fluorescent Lamps
89, Group 3 Actinium(Ac) (Actinide)
90, Group 3 Thorium(Th) (Actinide)
91, Group 3 Protactinium(Pa) (Actinide)
92, Group 3 Uranium(U) (Actinide)		U235/Atomic Bomb, Nuclear Reactor U238/Breeder Reactor, Armor-piercing Antitank Shell, Missile Re-entry Ballast, Ceramic Glaze, Rock Dating
93, Group 3 Neptunium(Np) (Actinide)
94, Group 3 Plutonium(Pu) (Actinide)
95, Group 3 Americium(Am) (Actinide)
96, Group 3 Curium(Cm) (Actinide)
97, Group 3 Berkelium(Bk) (Actinide)
98, Group 3 Californium(Cf) (Actinide)
99, Group 3 Einsteinium(Es) (Actinide)

Groups 3 - 12 Elements