19) Select the correct IUPAC name for: [FeF4(OH2)2] (a) diaquatetrafluoroiron(iii) ion (b) diaquatetrafiuoroferratefili) ion (c) diaguatetrafluoroiron(i) ion (d) diaquatetrafluoroferrate(1) ion (e) none of these 20) Which metal carbonyls do not obey 18 - electron rule: 1. COb(CO)ie 2rF(CO)10 3- Co4(CO)2 4. V(CO)K (a) 3 and 4 (b) 2 and 3 (c) 1,2 and 4 (d) 1,2,3 and 4 21) Which of the following complexes show easy oxidation? a) (n3C3H2)2Os c) (n5C3H3)2Rh d) in 5C5H3H2r e) none of them