Meitnerium

109
Mt

268

Properties

Symbol Name Atomic Number Atomic Weight Group Number
Mt Meitnerium 109 268 9

Description

Standard State: Presumably a solid at 298 K
Color: Unknown, but probably metallic and silvery white or gray in appearance

Meitnerium is a synthetic element that is not present in the environment at all.   The interested reader should consult the on-line version of The Wonderful World of Atoms and Nuclei for a fascinating insight into research on "super-heavy" atoms. Only a few atoms of meitnerium have ever been made. The first atoms were made through a nuclear reaction involving fusion of an isotope of bismuth with one of iron.