Arsenic
Arsenic is a chemical element with symbol "As" and atomic number 33. Arsenic occurs in many minerals, usually in conjunction with... [Read More]
Germanium
Germanium is a chemical element with symbol " Ge" and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the ca... [Read More]
Gallium
Gallium is a chemical element with symbol "Ga" and atomic number 31. Elemental gallium does not occur in nature, but as the galli... [Read More]
Zinc
Zinc, in commerce also spelter, is a metallic chemical element; it has the symbol "Zn" and atomic number 30. It is the first elem... [Read More]
Copper
Copper is a chemical element with the symbol " Cu" (from Latin: cuprum ) and atomic number 29. It is a ductile... [Read More]
