Which element of the periodic table shows +8 oxidation state?

Saurav    June 23 2022 10:50:37 PM

Osmium shows +8 oxidation state in Oso4.

Rajpara Parth    June 13 2025 12:58:48 PM

Hey! So, the element that shows a +8 oxidation state is osmium (symbol Os).

It's actually one of the only elements known to reach such a high oxidation state. You'll mostly see this in the compound osmium tetroxide (OsO₄), where osmium has an oxidation state of +8.

There's also ruthenium and xenon that can reach +8 in some cases, but osmium is the most well-known for it. It's pretty rare for elements to go that high, because it means the atom is losing a lot of electrons, which takes a lot of energy.

That's why you don’t see many elements doing it.