Osmium

Osmium ek chemical element hae jiske symbol Os, atomic number 76 aur mass number 190.23 hae. 
Duniya me bahut kamti Osmium hae, aur ii kaaran se ii bahut mahangaa hae.
Osmium ek metal, lekin ii kamti react kare aur ii kaaran se iske  "noble metal" bola jaawe hae.
Iske 1804 me Smithson Tennant London, England me paais rahaa. Osmium ke Iridium aur Platinum ke saathe paawa jjawe hae.

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