Chapter 22 The Transition Elements and Their Coordination Compounds Chapter 22 The Transition Elements and Their Coordination Compounds 1 The most common oxidation state for ions of the transition elements is A 2 B 3 C 4 D 5 E 6 Ans A 2 The ground state electron configuration of Cr2 is A Ar 4s13d5 B Ar 4s23d4 C Ar 3d4 D Ar 4s13d3 Ans C E Ar 4s23d2 3 The ground state electron configuration of Zn2 is A Ar 4s23d8 B Ar 4s23d10 C Ar 4s13d9 D Ar 3d10 Ans D E Ar 3d8 4 Which of the following atoms has the biggest radius A Ti B Cr C Fe D Ni E Zn Ans A 5 A certain transition element has the stable oxidation states of 2 3 4 5 and 6 In which state will the element be most likely to form a covalent bond with chlorine A 2 B 3 C 4 D 5 E 6 Ans E 6 A certain transition element has the stable oxidation states of 2 3 5 and 6 In which state will the element be most likely to form an ionic bond with chlorine A 2 B 3 C 4 D 5 E 6 Ans A 7 Which of the following transition elements will form an ion with the largest oxidation number A chromium Cr Group 6B 6 D cobalt Co Group 8B 9 B manganese Mn Group 7B 7 E zinc Zn Group 2B 12 C iron Fe Group 8B 8 Ans B 8 If M represents a transition element which of the following oxides should be the least basic A MO B M2O C M2O3 D MO2 E MO3 Ans E 9 Which of the following ions is most likely to form colored compounds A Sc3 B Cu C Zn2 D Cr3 E Ca2 Ans D Page 309 2013 by McGraw Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied scanned duplicated forwarded distributed or posted on a website in whole or part Chapter 22 The Transition Elements and Their Coordination Compounds 10 Which of the following ions is least likely to form colored compounds A Mn2 B Cr5 C Sc3 D Fe3 E Co2 Ans C 11 Which of the following will be diamagnetic A Ni2 B Cr2 C Mn2 D Co3 E Ti4 Ans E 12 Which of the following will be paramagnetic A V5 B Ni2 C Mn7 D Ti4 E Zn Ans B 13 What is the highest possible oxidation state for palladium Pd A 1 B 2 C 3 D 4 E 6 Ans D 14 What is the highest possible oxidation state for molybdenum Mo A 2 B 4 C 6 D 8 E None of these choices is correct Ans C 15 Which of the following should be the strongest reducing agent A Fe B Ru C Os D Re E Cu Ans A 16 Which of the following will be the strongest oxidizing agent A Cr B Cr II C Cr III D Cr IV E Cr VI Ans E 17 Which of the oxidation states of chromium has the largest valence state electronegativity A chromium 0 D chromium IV B chromium II E chromium VI C chromium III Ans E Page 310 2013 by McGraw Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied scanned duplicated forwarded distributed or posted on a website in whole or part Chapter 22 The Transition Elements and Their Coordination Compounds 18 Chromium and manganese are among the transition elements that form several different oxides Which of the following statements characterize these oxides A As the oxidation number on the metal increases the valence state electronegativity increases and the oxides change from acidic to basic B As the oxidation number on the metal increases the valence state electronegativity increases and the oxides change from basic to acidic C As the oxidation number on the metal increases the valence state electronegativity decreases and the oxides change from acidic to basic D As the oxidation number on the metal increases the valence state electronegativity decreases and the oxides change from basic to acidic E None of these statements is correct Ans B 19 A certain transition metal complex has the formula MX42 If the metal ion has a d8 electron configuration what is the shape of the complex A octahedral D trigonal pyramid B square pyramid E square planar C tetrahedral Ans E 20 Which of the following is considered a bidentate ligand A cyanide CND nitrite NO2B thiocyanate SCN E hydroxide OH2C oxalate C2O4 Ans C 21 A characteristic of ligands is that A they are Lewis acids B they are Lewis bases C they are ions Ans B D E they are electron pair acceptors they are Br nsted Lowry acids 22 10 0 mL of a 0 100 mol L solution of a metal ion M2 is mixed with 10 0 mL of a 0 100 mol L solution of a ligand L A reaction occurs in which the product is ML32 Approximately what is the maximum concentration of ML32 in mol L which could result from this reaction A 0 100 B 0 050 C 0 033 D 0 025 E 0 017 Ans E 23 What is the coordination number of cobalt in the complex ion Co en Cl4 en ethylenediamine A 1 B 2 C 4 D 6 E 8 Ans D Page 311 2013 by McGraw Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied scanned duplicated forwarded distributed or posted on a website in whole or part Chapter 22 The Transition Elements and Their Coordination Compounds 24 The oxidation and coordination numbers of cobalt in the compound Co NH3 5Cl Cl2 are respectively A 2 and 6 D 3 and 8 B 2 and 8 E None of these choices is correct C 3 and 6 Ans C 25 In the compound K Co C2O4 2 H2O 2 where C2O42 oxalate the oxidation number and coordination number of cobalt are respectively A 1 and 4 B 1 and 6 C 3 and 4 D 3 and 6 E 1 and 6 Ans D 26 In the compound Ni en 2 H2O 2 SO4 where en ethylenediamine the oxidation number and coordination number of nickel are respectively A 2 and 6 B 4 and 6 C 6 and 6 D 2 and 4 E 4 and 4 Ans A 27 Give the systematic name for Cu NH3 4 Cl2 A dichlorotetraamminecuprate II D B tetraamminecopper II chloride E C copper II ammonium chloride Ans B tetraaminocopper II chloride None of these choices is correct 28 The compound K3 Fe CN 6 is used in calico printing and wool dyeing Give its systematic name A potassium iron III hexacyanate D potassium hexacyanideferrate B tripotassium iron III hexacyanate E None of these choices is correct C potassium hexacyanoferrate III Ans …