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17. What do you observe when aqueous ammonia is added slowly to aqueous copper Il sulphate until the ammonia is present in excess? A) pale blue solution turns deep blue B) pale groen solution turns muddy green C) pale brown solution tums muddy brown D) pale green solution turns deep blue 18 What property of the transition metal is vanadium making use of in vanadium pentoxide (V,O,) as it functions as a catalyst in the contact process? A) paramagnetism B) empty d-orbital C) variable oxidation stale D) none of the above 9. Why are scandium and Zinc consider as d- block elements but not as transitional metals? A they do not form coloured compounds B) ihey are not paramagnetic C) they do not form complexes D) they do not form ions or compounds with partially filled d-orbitals.

17. What do you observe when aqueous ammonia is added slowly to aqueous copper Il sulphate until the ammonia is present in excess? A) pale blue solution turns deep blue B) pale groen solution turns muddy green C) pale brown solution tums muddy brown D) pale green solution turns deep blue 18 What property of the transition metal is vanadium making use of in vanadium pentoxide (V,O,) as it functions as a catalyst in the contact process? A) paramagnetism B) empty d-orbital C) variable oxidation stale D) none of the above 9. Why are scandium and Zinc consider as d- block elements but not as transitional metals? A they do not form coloured compounds B) ihey are not paramagnetic C) they do not form complexes D) they do not form ions or compounds with partially filled d-orbitals.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer Q17, 18, 19 Showing detailled explanations.

14. Transition elementa exhibit variable 20. Vanadium has the olectron structore te oxidation states in their compounds becauze A) they are all metals B) the 3d and 4S electrons can easily be used in chenical combination C) they funcltion vory well as catalysts in chenical reactions 2p 3s p Sd4n Whicht one of the following suggosied Cormpounds of vanarfium is likely in exer A) Na VO, C) Na, VO B) (NH) VO, 0) K VO, 21. One of the isomers of CrC GH O dissoles in water forming a solution fromn which only a third of the total chloride present precipitatod by AGNO, (a4) Which ong of the following represents the correct streture for the complex chromium ion in the D) they have high successive lenisation energies. 15 What is the coordination number of iron in the complex compound K.(Fe(CN), 1? 8) 4 A) 3 C) 6 D) 8 aqueous solution? A) [CrCH O) C) (Cr (H,O),CL 16. Potassium hexacyanoferrate (Ili) KIFE(CN), solu io contains iron in the oxidation state of +3 but no pracipitate of Fe(OH), is lormed on addition of aqueous sodium hydroxide The reasons is: 8) (CiCH,0)CP D) (Cr Ci A) the cyano ligand is a stronger ligand than the liydroxide ligand B) the ligand field splitting of the cyano ligand is higher than that of the hydroxide ligand. C) the anionic complex fomed in the aqueous solution repels the approaching hydraxide ligand D) None of the above. 22 Which one of the following provides the most satisfactory definition of a transition ouatal A) occurs in the d-block of the periodie B) has variable oxidation stste in its compound C) forms an lon with a parfially fillod d Bubshell D) lies between scandium and zinc in the periodic table 23 Which one of the tollowing lons has the smallest radius? 17. What do you observe when aqueous ammonia is added slowly to aqueous copper Il sulphate until the ammonia is present in A) Cr C) N B) N D) TP excess? A) pale blue solution turns deep blue B) pale green solution turns muddy green C) pale brown solution turns muddy brown D) pale green solution turns deep blue Questions 24-26 The compound I (Co(NH,), Br SO, and I= [Co(NH), SOJ Br exhibit isomerism. 18 What property of the transition metal is vanadium making use of in vanadium pentoxide (V,O,) as it functions as a catalyst in the contact process? A) paramagnetism B) empty d-orbital C) variable oxidation state D) none of the above 24. What type of isomerism do they exhibit? A) structural, isomerism B) optical isomerism C) ionisation isomerism D) hydration isomerism 25 What anions will each yield in squeous solution 19. Why are scandium and Zinc consider as d- block elements but not as transitional A) B) C) D) Br so Br Br metals? A they do not form coloured compounds B) ihey are not paramagnetic C) they do not form complexes D) they do not form ions or compounds with partially filled d-orbitals. SO SO SO Br 272
Transcribed Image Text:14. Transition elementa exhibit variable 20. Vanadium has the olectron structore te oxidation states in their compounds becauze A) they are all metals B) the 3d and 4S electrons can easily be used in chenical combination C) they funcltion vory well as catalysts in chenical reactions 2p 3s p Sd4n Whicht one of the following suggosied Cormpounds of vanarfium is likely in exer A) Na VO, C) Na, VO B) (NH) VO, 0) K VO, 21. One of the isomers of CrC GH O dissoles in water forming a solution fromn which only a third of the total chloride present precipitatod by AGNO, (a4) Which ong of the following represents the correct streture for the complex chromium ion in the D) they have high successive lenisation energies. 15 What is the coordination number of iron in the complex compound K.(Fe(CN), 1? 8) 4 A) 3 C) 6 D) 8 aqueous solution? A) [CrCH O) C) (Cr (H,O),CL 16. Potassium hexacyanoferrate (Ili) KIFE(CN), solu io contains iron in the oxidation state of +3 but no pracipitate of Fe(OH), is lormed on addition of aqueous sodium hydroxide The reasons is: 8) (CiCH,0)CP D) (Cr Ci A) the cyano ligand is a stronger ligand than the liydroxide ligand B) the ligand field splitting of the cyano ligand is higher than that of the hydroxide ligand. C) the anionic complex fomed in the aqueous solution repels the approaching hydraxide ligand D) None of the above. 22 Which one of the following provides the most satisfactory definition of a transition ouatal A) occurs in the d-block of the periodie B) has variable oxidation stste in its compound C) forms an lon with a parfially fillod d Bubshell D) lies between scandium and zinc in the periodic table 23 Which one of the tollowing lons has the smallest radius? 17. What do you observe when aqueous ammonia is added slowly to aqueous copper Il sulphate until the ammonia is present in A) Cr C) N B) N D) TP excess? A) pale blue solution turns deep blue B) pale green solution turns muddy green C) pale brown solution turns muddy brown D) pale green solution turns deep blue Questions 24-26 The compound I (Co(NH,), Br SO, and I= [Co(NH), SOJ Br exhibit isomerism. 18 What property of the transition metal is vanadium making use of in vanadium pentoxide (V,O,) as it functions as a catalyst in the contact process? A) paramagnetism B) empty d-orbital C) variable oxidation state D) none of the above 24. What type of isomerism do they exhibit? A) structural, isomerism B) optical isomerism C) ionisation isomerism D) hydration isomerism 25 What anions will each yield in squeous solution 19. Why are scandium and Zinc consider as d- block elements but not as transitional A) B) C) D) Br so Br Br metals? A they do not form coloured compounds B) ihey are not paramagnetic C) they do not form complexes D) they do not form ions or compounds with partially filled d-orbitals. SO SO SO Br 272
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