Archives

Erbium

Erbium Symbol Er Atomic Number 68 Atomic Mass 167.26 g.mol -1 Discovered by Nobel Institute for Physics in 1957... View Article

Ytterbium

Ytterbium Symbol Yb Atomic Number 70 Atomic Mass 173.045 Discovered by Ytterbium was discovered by Jean Charles Galissard de... View Article

Thulium

Thulium Symbol Tm Atomic Number 69 Atomic Mass 168.93 g.mol -1 Discovered by Per Theodor Cleve in 1879 Chemical... View Article

Hafnium

Hafnium Symbol Hf Atomic Number 72 Atomic Mass 178.49 g.mol −1 Discovered by George Charles de Hevesy and Dirk Coster  in 1923... View Article

Rhenium

Rhenium Symbol Re Atomic Number 75 Atomic Mass 186.21 g.mol -1 Discovered by Walter Noddack, Ida Tacke and Otto Berg in 1925... View Article

Holmium

Holmium Symbol Ho Atomic Number 67 Atomic Mass 164.930 Discovered by Holmium was discovered by Per Teodor Cleve at Uppsala,... View Article

Iridium

Iridium Symbol Ir Atomic Number 77 Atomic Mass 192.217 Discovered by Ghiorso in 1952 Group 9 Melting point 2446... View Article

Tantalum

Tantalum Symbol Ta Atomic Number 73 Atomic Mass 180.948 g.mol -1 Discovered by Anders Gustav Ekeberg in 1802... View Article

Lutetium

Lutetium (Lu) Symbol Lu Atomic Number 71 Atomic Mass 174.97 g.mol -1 Discovered by George Urbain in 1907 Group... View Article

Osmium (Os)

Osmium (Os) Symbol Os Atomic Number 76 Atomic Mass 190.2 g.mol -1 Discovered by Smithson Tennant in 1803 Group 8... View Article

Terbium

Terbium Symbol Tb Atomic Number 65 Atomic Mass 158.925 g.mol −3 Discovered by Carl Gustav Mosander Chemical... View Article

Platinum

Platinum Symbol Pt Atomic Number 78 Atomic Mass 195.08 g.mol -1  Discovered by Julius Scaliger in 1735 Group 10... View Article