Coordination Chemistry (Quiz-3) 1 / 5 The oxidation state of Fe in the brown ring complex [Fe(H2O)5NO]SO4Â is: +1 +2 +3 +4 2 / 5 Which of the following complex ion shows geometrical isomerism? [Cr(H2O)4Cl2]+ [Pt(NH3)3Cl] [Co(NH3)6]3+ [Co(CN)5(NC)]3- The complex ion [Cr(H2O)4Cl2]+ shows geometrical isomerism. This is because the two chloride ligands can be either cis (on the same side) or trans (on opposite sides) to each other. This results in two possible isomers, cis-[Cr(H2O)4Cl2]+ and trans-[Cr(H2O)4Cl2]+, which have different spatial arrangements. 3 / 5 2,4- Dinitrophenyl hydrazine is an example for: Tridentate ligand Monodentate ligand Polydentate ligand Didentate ligand Monodentate ligands are ligands that can form only one bond with a metal ion. In the case of 2,4-Dinitrophenyl hydrazine, it can form a single bond with a metal ion through one of its functional groups. Therefore, it is classified as a monodentate ligand. 4 / 5 The compounds [Co(SO4)(NH3)5]Br and [Co(SO4)(NH3)5]Cl represent: Linkage isomerism Ionisation isomerism Coordination isomerism No isomerism The compounds [Co(SO4)(NH3)5]Br and [Co(SO4)(NH3)5]Cl do not represent any form of isomerism. Isomerism refers to the existence of different compounds with the same molecular formula but different structural arrangements or bonding patterns. In this case, both compounds have the same molecular formula and the same coordination sphere around the central cobalt ion. The only difference is the counterion, which is Br- in one compound and Cl- in the other. Since the coordination sphere and the overall structure of the compounds remain unchanged, there is no isomerism present. 5 / 5 When 1 mol of CrCl3.6H2O is treated with excess of AgNO3, 3 mol of AgCl is obtained. The formula of the complex is [CrCl3(H2O)3].3H2O [CrCl2(H2O)4]Cl.2H2O [CrCl(H2O)5]Cl2.H2O [Cr(H2O)6]Cl3 The given question states that when 1 mol of CrCl3.6H2O is treated with excess AgNO3, 3 mol of AgCl is obtained. This implies that each CrCl3.6H2O unit reacts with 3 AgNO3 units to form 3 AgCl units. From this information, we can deduce that the complex must contain one Cr atom, as 1 mol of CrCl3.6H2O reacts to form 1 mol of Cr-containing complex. Additionally, since each CrCl3.6H2O unit contains 6 H2O molecules, the complex must also contain 6 H2O ligands. Therefore, the correct formula is [Cr(H2O)6]Cl3. Your score isThe average score is 60% 0% Restart quiz
