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| ANH,),JBr are ionisation, , , , , geason + They have different ,,, (Co(SO,)(NH,),]Br is red. ent colours, [Co BrNH,),] SO, is red-violet while, , tion : The compl 2, , ) Asse Plex [PtCl oe, , w Reason : Two geometrical ‘cident, cis- is optically inactive, Hee, , le Choice Questions, , , , , , form three geometrical and optical isomers., and trans- and trans- is optically active but, , , , , , , , , , , , , , e formula of the coordinati, i 1 490 compound tetraammineaquachloridocobalt(III) chloride, , is, (a) (CoNH,),(H,0)C11C1,, (@) (Co(NH,),(H,O)CNC1,, , , , (6) {Co(NH,),01,0)CICl,, (@) [Co(NH,) GH, 0)CIC1, (CBSE Sample Paper. 2020-21), , , , : Ambidentate ligands like No, and SCN~ are:, (a) Sean (6) didentate, jolydentate, (oc) poly (d) has variable denticity, : (CBSE Sample Paper. 2020-21), 3, How many ions are produced from the complex (Co(NH,),Cl] Cl, in solution?, , , , , , , , , , , , , 4 () 2, Oe Be ©) 3 @ 5 (CBSE. 2020), , Which of the following is the most stable complex?, CO) EO) 0 (©) (FeC,0),)* (d) tFe(CN),)*, , , , , (C.B.S.E. 2020), ) and tetrahedral (4) complexes is, , , , 5, The crystal field splitting energy for octahedral (A, , , , related as, @ = 24 (6) A= 24 ( 4 4, n= gfe t go c) A= gee (d) A, = 2A;, (C.B.S.E. 2020), 6, What type of isomerism is shown by the pair [Cr(H,O,)] Cl, and [Cr(H,0),Cl] Cl,H.0?, (a) Ionization isomerism (6) Coordination isomerism ae, (c) Solvate isomerism (d) Linkage isomerism (CBSE 2020), 7, The coordination number of ‘Co’ in the complex [Co(en),]* is, (@) 3 (6) 6 (c) 4 (2d) 5 (CBSE 2020), 8, KJAIC,0,),] is named as, (6) potassium aluminooxalate, , (a) potassium trioxalatoaluminate(II]), (c) potassium aluminium(III) oxalate, , " 9, The oxidation states of metal atoms in Ni(CO), and Na[Co(CO),) complexes are:, (c) +2 and +3 (d) Oand-1, , (d) potassium trisoxalatoaluminate(II]), , (a) 4and4 (6) Oand +3, , 10, What is the correct electronic configuration of the central atom in K, {Fe(CN),] based on, crystal field theory? ie i, (a) the (©) 42% (c) et @ et,, , 2g 8