Meitnerium

Analytical testing dots

Meitnerium is a chemical element in the periodic table that has the symbol Mt and atomic number 109. It is a synthetic element whose most stable known isotope is Mt-270 with a half-life of 1.1 seconds.

 

General
Name, Symbol, Number meitnerium, Mt, 109
Chemical series transition metals
Group, Period, Block 9, 7, d
Appearance unknown, probably silvery
white or metallic gray
Standard atomic weight [270] gĀ·mol-1
Electrons per shell 2, 8, 18, 32, 32, 15, 2
Phase presumably a solid
CAS registry number 54038-01-6

 

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