Group 9 element

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Group	9
Period
4	27  Co
5	45  Rh
6	77  Ir
7	109  Mt

A Group 9 element is one in the series of elements in group 9 (IUPAC style) in the periodic table, which consists of the transition metals cobalt (Co), rhodium (Rh), iridium (Ir), and meitnerium (Mt).

Explanation of right side periodic table slice:

Transition metals

atomic number in black are solids

solid borders are older than the Earth (Primordial elements)

dashed borders have no isotopes older than the earth

Periodic tables
Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Names and atomic masses (text only) | Inline F-block | Elements to 218 | Electron configurations | Metals and nonmetals | Table by blocks | Alternatives
Lists of elements
Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass
Groups:   1 -  2 -  3 -  4 -  5 -  6 -  7 -  8 -  9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
Periods:  1  -  2  -  3  -  4  -  5  -  6  -  7  -  8  -  9
Series:   Alkalis  -  Alkaline earths  -  Lanthanides  -  Actinides  -  Transition metals  -  Poor metals  -  Metalloids  -  Nonmetals  -  Halogens  -  Noble gases
Blocks:  s-block  -  p-block  -  d-block  -  f-block  -  g-block