0 in the elemental form, +2 and +3 (most common) in its compounds. But osmium can form compounds with oxidation number up to +8 (maximum)
Osmium is in its 8+ oxidation state. oxygen is in its 2- oxidation state.
+8 is the usually quoted maximum oxidation number. Osmium tetra-oxide has this. +7 is fairly common as manganese in KMnO4 has this oxidation number.
oxidation number of I is -1. oxidation number of F is +1.
Zn has oxidation number +2; S has oxidation number -2
The oxidation number for H is +1, and the oxidation number for O is -1.
Osmium is in its 8+ oxidation state. oxygen is in its 2- oxidation state.
+8 is the usually quoted maximum oxidation number. Osmium tetra-oxide has this. +7 is fairly common as manganese in KMnO4 has this oxidation number.
-2 for each O, -1 for each Cl and +6 for Os
Osmium contains 114 neutrons.
Ruthenium and Osmium both show the oxidation state of +8, which is highest known for any single metal ion.
The valence shell of osmium contains on 2 electrons. The other shells in order form the beginning are 2,8,18,32,14,2.
The atomic symbol of osmium is Os. The Atomic number of Osmium is 76. The atomic weight of Os is 190.23 grams per mole. 99% pure Osmium powder is around $100/gram.See the Web Links to the left of this answer for a periodic table with more information about this element!
The highest oxidation state ever achieved by an element is +8. This oxidation state can be found in 3 elements: Osmium, Ruthenium and Xenon.The synthetic element Hassium is also expected to have this oxidation state.
Osmium
The most common isotope of osmium is 192 Os. All osmium isotopes contain 76 electrons.
This an isotope of osmium, osmium-191. The symbol is 19176Os.
oxidation number of I is -1. oxidation number of F is +1.