Osmium-Info
isotopes
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isotopes

Osmium consists of a mixture of seven stable isotopes: Osmium-192 (41 percent), Osmium-190 (26.4 percent), Osmium-189 (16.1 percent), Osmium-188 (13.3 percent), Osmium-187 (1.6 percent), Osmium-186 (1.58 percent) and Osmium-184 (0.02 percent).

The only natural radioactive isotope is Osmium-186 with a half-life of about two quadrillion years.

In addition, there exist 27 short-lived isotopes, of which Osmium-194 has the longest half-life (six years).

The ratio of the isotope Osmium-187 to the isotope Osmium-186 is used in rhenium-osmium chronometers. These are used to determine the age of iron meteorites.

 

 
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isotopes