Arsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals and also as a pure elemental crystal. The main use...
Germanium was discovered by Clemens Winkler in 1886. Germanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white...
Gallium was discovered by Lecoq de Boisbaudran in 1875. Gallium is a chemical element with symbol Ga and atomic number 31. Gallium does not occur as a...
Zinc was discovered by Indian metallurgists before 1000 BC. Zinc is a chemical element with symbol Zn and atomic number 30. In some respects zinc is chemically...
Copper is a chemical element with symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper...
Nickel was discovered and first isolated by Axel Fredrik Cronstedt in 1751. It is a chemical element with symbol Ni and atomic number 28. It is a...
Cobalt was discovered by George Brandt in 1739. Cobalt is a chemical element with symbol Co and atomic number 27. It is always found in chemically...
Iron was discovered before 5000 BC. Iron is a chemical element with symbol Fe and atomic number 26. It is by mass the most common element...
Manganese was discovered by Torbern Olof Bergman in 1770. It is a chemical element with symbol Mn and atomic number 25. It is not found as a...
Chromium was discovered by Louis Nicolas Vauquelin in 1797. Chromium is a chemical element with symbol Cr and atomic number 24. It is a steely-gray, hard and brittle...
Vanadium was discovered by Andrés Manuel del Río in 1801 and was first isolated by Nils Gabriel Sefström in 1830. Vanadium is a chemical element with symbol...
Titanium was discovered by William Gregor in 1791 and was first isolated by Jöns Jakob Berzelius in 1825. It is a chemical element with symbol Ti and...
Scandium was predicted by Dmitri Mendeleev in 1871 and was discovered and first isolated by Lars Fredrik Nilson in 1879. Scandium is a chemical element with...
Calcium was discovered by Humphry Davy in 1808. Calcium is a chemical element with symbol Ca and atomic number 20. Calcium is a soft gray alkaline earth...
Potassium was discovered and first isolated by Humphry Davy in 1807. Potassium is a chemical element with symbol K and atomic number 19. It was first isolated...
Argon was discovered and first isolated by Lord Rayleigh and William Ramsay in 1894. Argon is a chemical element with symbol Ar and atomic number 18. Argon...
Chlorine was discovered and first isolated by Carl Wilhelm Scheele in 1774. It was first recognized as an element by Humphry Davy in 1808. Chlorine is a...
Sulfur was recognized as an element by Antoine Lavoisier in 1777. Sulfur is a chemical element with symbol S and atomic number 16. Sulfur is a bright...
Phosphorus was discovered by Hennig Brand in 1669 and was recognized as an element by Antoine Lavoisier in 1777. Phosphorus is a chemical element with symbol P...
Silicon presence was predicted by Antoine Lavoisier in 1787 and it was first discovered and isolated by Jöns Jacob Berzelius in 1823. Silicon is a chemical element with...
