How is oxidation nmbr 3 of cobalt in these compunds - Chemistry - Coordination Compounds

Question

How is oxidation nmbr 3 of cobalt in these compunds ?

Vartika Jain · Accepted Answer

Dear Student,

Oxidation number can be calculated as :[Co(NH3)6][CoF6] The both coordination spheres exists in he form of [Co(NH3)6]3+[CoF6]3-So, charge on Co in first coordination sphere can be calculated asx + 6×oxidation no
 of NH3 = 3or, x+6×0=3or, x=3Similarly, for the anionic partx + 6×oxidation no
 of F = -3or, x+6×(-1)=3or, x=+3Hence, oxidation state of Co in both the spheres will be +3

How is oxidation nmbr 3 of cobalt in these compunds.?