Question

SbF6 oxidising number of Sb

ClF3 oxidising number of Cl

H2PtCl6 oxidising number of Pt

H2AsO4(anion) oxidising number of As

K3[Fe(CN)6] oxiding number of Fe

Answer 1

the oxidation number of Sb in SbF6 is +6 (x + 6*-1 =0) , x = +6

the oxidation number of Cl in ClF3 is +3 (x + 3*-1 =0) x = +3

the oxidation number of Pt in H2PtCl6 is +4 (2*1 + x + 6*-1 =0 ) , x =+4

the oxidation number of As in H2AsO4 is +5 (2*1 + x +4*-2 = -1) x = +5

the oxidation number of Fe in K3[Fe(CN)6] is +3 (3*1 + x + 6*-1 = 0) ,x =+3