Chemistry 230 Exam 4| 55 Questions | With Complete Solutions

What is named first the cation or anion? correct answer: Cation How many Ligands are in [Cr(NH3)6](NO3)3 correct answer: 6 How many Ligands are in K[Au(OH)4] correct answer: 4 Oxidation number of the metal in K[Au(OH)4]? correct answer: +3 explanation: hydroxide has a charge of -1, since there are a total of 4 hydroxides the total (-) charge is -4. The charge of K is +1. Therefore the charge of Au must be +3. +4 + (-4)=0 Within a complex ion ligands are named in _____________ order with the _______ last correct answer: Alphabetical order, metal ion Anionic ligands usually end with the letter "__" correct answer: O Neutral ligands are called by... correct answer: regular names What are the exceptions to the Anionic/Neutral ligand rule? (3) correct answer: NH3- ammine H20- aqua CO- carbonyl When several ligands of the same kind are present use the following prefixes correct answer: di, tri, tetra to indicate number If the ligand already contains a greek prefix indicate the number with.... correct answer: bi, tri, tetraki How is an oxidation number written after a metal? correct answer: Roman Numerals If the complex is an anion the name ends in... correct answer: ate What does "en" stand for? correct answer: ethlenediamine Electron Configuration of Fe? correct answer: 4s2 3d6 Electron Configuration of Fe+2 correct answer: 3d6 explanation: get rid of s orbital first. If it was Fe+3 it would be 3d5 Name of (br-) ligand? correct answer: Bromo What is the name of [Cr(H2o)4Cl2]Cl correct answer: tetraaquodichlorochromium (III) chloride What is the name of [Co(en)3]SO4 correct answer: ethlenediaminecobalt (II) sulfate What is the structure of something with coordination number 2? correct answer: linear What are the possible structure(s) of something with coordination number 4? correct answer: Tetrahedral/ Square Planar What is the structure of something with coordination number 6? correct answer: Octahedral A structure of coordination number 4 that is square planar most likely contains which two elements? correct answer: Pt, Pl