Lanthanum57

Lanthanum is a soft, ductile, silvery-white metallic chemical element with symbol La and atomic number 57. It tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. It gave its name to the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table:it is also sometimes considered the first element of the 6th-period transition metals.

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Symbol

La

Atomic mass

138.905477

Density

6.162 g/L

Boiling Point

3,737K

Melting Point

1,193K

Molar heat

27.11 (mol*K)

Discovered by: Carl Gustaf Mosander

Edu Periodic Table

The Edu Periodic Table, also known as the periodic table of chemical elements, is an interactive and modern display of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry.

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