GROUP 9 ELEMENT

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

In modern IUPAC nomenclature, 'Group 9' of the periodic table contains the elements cobalt ('Co'), rhodium ('Rh'), iridium ('Ir'), and meitnerium ('Mt'). These are all d-block transition metals. All known isotopes of Mt are radioactive with short half-lives, and it is not known to occur in nature; only minute quantities have been synthesized in laboratories.

>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

Contents

Applications

Applications

★ Alloys with other metals, primarially to add corrosion and wear resistance

★ Industrial Catalysts

★ Superalloys

★ Electrical Components