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1、blueSO42-Light green(uneasily observed)3.Ni complexesIn octahedral complex,sp3d2 is used for bonding,e.g.:Ni(NH3)62+.Planar square complexes,dsp2 is used for bonding,e.g.:Ni(CN)42-.Hydrated nickel nitrate and its solutionIdentification of Ni ionsSuccinic oximeBright redFe2+H+Fe(OH)2 NH3 H2O Fe2+淡绿淡绿
2、 OH-Fe(OH)2(s,white)O2 Fe(OH)3(s,红棕红棕)HClFe3+Co(NH3)63+red O2Co(NH3)62+yellow NH3H2O Co(OH)Cl(s,blue)NH3 H2O Co2+(Cl-)pink OH-Co(OH)2(s,pink)NaClO Co(OH)3(s,红棕红棕)strong HCl Co2+（CoCl42-,blue）Ni(NH3)62+blue NH3 H2ONi2(OH)2SO4浅绿浅绿 NH3 H2ONi2+(SO42-)淡绿淡绿 OH-Ni(OH)2(s,果绿果绿)NaClO NiO(OH)(s,black)strong HClNi2+Fe(NCS)n3-n 血红血红 Co(NCS)42-azure Ni(DMG)2(s,bright red)KFe(CN)6Fex(s,blue)(acetone)Light greenLight greenLight greenReddish-brown)Reddish-brown)blood-red fruit-green)Identification of Fem Co,and Ni ions using above reaction