Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Osmium has the highest oxidation state of +8 because it can expand it’s octet and use all its 8 electrons.
Electronic configuration of Os- [Xe] 4f14 5d6 6s2
5d6 and 6s2 can be excited to get an oxidation state of +8