<P> The most stable oxidation state for manganese is + 2 , which has a pale pink color , and many manganese ( II ) compounds are known , such as manganese ( II ) sulfate ( MnSO ) and manganese ( II ) chloride ( MnCl ) . This oxidation state is also seen in the mineral rhodochrosite ( manganese ( II ) carbonate ) . Manganese ( II ) most commonly exists with a high spin , S = 5 / 2 ground state because of the high pairing energy for manganese ( II ) . However , there are a few examples of low - spin , S = 1 / 2 manganese ( II ) . There are no spin - allowed d -- d transitions in manganese ( II ) , explaining why manganese ( II ) compounds are typically pale to colorless . </P>
<P> The most stable oxidation state for manganese is + 2 , which has a pale pink color , and many manganese ( II ) compounds are known , such as manganese ( II ) sulfate ( MnSO ) and manganese ( II ) chloride ( MnCl ) . This oxidation state is also seen in the mineral rhodochrosite ( manganese ( II ) carbonate ) . Manganese ( II ) most commonly exists with a high spin , S = 5 / 2 ground state because of the high pairing energy for manganese ( II ) . However , there are a few examples of low - spin , S = 1 / 2 manganese ( II ) . There are no spin - allowed d -- d transitions in manganese ( II ) , explaining why manganese ( II ) compounds are typically pale to colorless . </P>
what is the oxidation number of manganese in the mn ion
what is the oxidation number of manganese in the mn ion
+ 2
+ 2