The Group 12 elements are: A periodic table group is a vertical column in the periodic table of the chemical elements. ... In the periodic table of the elements, a period is a row of the table. ... A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table of the elements. ... General Name, Symbol, Number zinc, Zn, 30 Chemical series transition metals Group, Period, Block 12, 4, d Density, Hardness 7140 kg/m3, 2. ... A period 5 element is one of the chemical elements in the fifth row (or period) of the periodic table of the elements. ... General Name, Symbol, Number Cadmium, Cd, 48 Chemical series Transition metals Group, Period, Block 12, 5, d Density, Hardness 8650 kg/m3, 2 Appearance Silvery gray metallic Atomic properties Atomic weight 112. ... A period 6 element is one of the chemical elements in the sixth row (or period) of the periodic table of the elements, including the Lanthanides. ... General Name, Symbol, Number Mercury, Hg, 80 Chemical series transition metals Group, Period, Block 12 (IIB), 6, d Density, Hardness liquid 13. ... A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the elements. ... Known properties Name, Symbol, Number Ununbium, Uub, 112 Chemical series Transition metal Group, Period, Block 12, 7, d Appearance Unknown, probably a metallic and silvery white or grey colour. ...

• Zinc (30)

• Cadmium (48)

• Mercury (80)

• Ununbium (112)

Color coding for these atomic numbers: At room temperature, all are solid but mercury is liquid; red indicates item is synthetic and does not occur naturally. General Name, Symbol, Number zinc, Zn, 30 Chemical series transition metals Group, Period, Block 12, 4, d Density, Hardness 7140 kg/m3, 2. ... General Name, Symbol, Number Cadmium, Cd, 48 Chemical series Transition metals Group, Period, Block 12, 5, d Density, Hardness 8650 kg/m3, 2 Appearance Silvery gray metallic Atomic properties Atomic weight 112. ... General Name, Symbol, Number Mercury, Hg, 80 Chemical series transition metals Group, Period, Block 12 (IIB), 6, d Density, Hardness liquid 13. ... Known properties Name, Symbol, Number Ununbium, Uub, 112 Chemical series Transition metal Group, Period, Block 12, 7, d Appearance Unknown, probably a metallic and silvery white or grey colour. ... This article is in need of attention. ...

See also

• Periodic Table of the Elements