Oxidation states "()" in naming coord compounds

[Shirley Liu 2I]

Are oxidation states when naming coordination compounds always positive for the central metal atom/ion? The Roman numeral is always positive, so is the oxidation state always positive? Or how would the parenthesis "()" in the name look if the oxidation state was negative?

[Porus_Karwa_2E]

Yes the central atoms is always positively charged.

[ElliotPourdavoud 1A]

The metals lose electrons very easily so their charge is always positive.

[Jaqueline Monreal 2L]

Yes the Roman numerals will always be positive

[May Xiao 1H]

It will always be positive. During exam, it's useful to calculate the oxidation state by including all the atoms in the molecule, just to make sure it's the right oxidation state :)