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Chemistry
Periodic Table
Group 9 Elements
Group 9 Elements
#
Symbol
Name
Atomic Mass
Category
27
Co
Cobalt
58.933
Transition Metals
45
Rh
Rhodium
102.906
Transition Metals
77
Ir
Iridium
192.217
Transition Metals
109
Mt
Meitnerium
278
Transition Metals
4 elements