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CONFIDENTIAL SULTAN IDRIS EDUCATION UNIVERSITY UNIVERSITI PENDIDIKAN SULTAN IDRIS FINAL EXAMINATION SEMESTER 2 SESSION 2015/2016 CODE: SKT1013 COURSE INTRODUCTION TO . INORGANIC CHEMISTRY 2 9 FEB 2016 DATE: DURATION : 2 HOURS INSTRUCTIONS 1. This paper consists of two sections: PART A and PART B. questions in PART A on the OMR answer sheet. 3. Answer ALL questions in PART B in the examination booklet 2. Answer ALL 4. Scientific calculator 5. This question This provided. be used in this examination. will be collected at the end of the examination. paper can question paper contains 13 pages the including cover page and appendix PROGRAMME: LECTURE GROUP: YEAR: A/8/C/D/E/F/G/H REGISTRATION NO: IDENTITY CARD NO: I I I I I I I I I I I I I I I I I I I I LECTURER: PROF. DR. MUSTAFFA AHMADI DR. NORHAYATI HASHIMI DR. YUSNITA JUAHIR DO NOT OPEN THIS QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO CONFIDENTIAL SKT1013 Introduction to Inorganic 2 Chemistry Part A Instruction: Answer ALL (Avogadro's 1. 2. 3. 4. 5. (30 Marks) questions number = on 6.023 Which groups contain the most elements classified A. 1,2, 13 B. 2,14,15 C. 13,14, 15 D. 14, 15, 16 Magnesium is the same group A. Barium B. Sodium C. Aluminium D. Phosphorus Which or family OMR as x answer sheet 1023) metalloids (semi metals)? as compound is formed colour in aqueous solution? A. Zinc acetate B. Copper sulfate C. Potassium bromide D. Sodium hydroxide Which elements in A. N B. As C. Si D. Bi Group 15, has the strongest metallic character? What is the electron A. [Ar] 3d4 4s2 B. [Ar] 3d44p2 C. 1 [Ar] 3d5 4s D. [Ar] 3d64s0 configuration for 24Cr? [See next page SKT1013 Introduction to 6. 3 Inorganic Chemistry Transition elements are elements that contain of the oxidation states of their an incomplete d sub-shell in at least compound. Which of the following one elements is TRUE about transition element? 7. 8. A. Soft and strong in their physical properties B. More harder than those of the s-block elements C. React with steam to D. Good conductors of heat and What is the electron A. [Ar] 3cF B. [Ar] 3cf C. [Ar] 3cf 4s2 D. [Ar] 3cf 4pl give metal electricity only for configuration and hydroxides hydrogen in liquid state Fe3+? Refer to the below diagram. The middle of the series (Cr to Ni) is due to the following factors EXCEPT trend showed a slight reduction in atomic radius at the 0.16 0.14 E .§. Vl � '5 III I Atomio radius ().12 ., ::0 'g 0.10 IX: -� 0.08 '. . Ionic radius �.��on}· radius 0:: ' ; 0.06 �--.._...___. .. Ionic (+3 ion) a � TI V � � � � M � � Element Element A. More electrons enter the inner 3d sub-shell B. The electron clouds C. The inner 3d electrons shield the outer 48 electrons D. The effective nuclear are pulled closer to the nucleus charge experienced by 48 effectively electrons increases very slowly [See next page SKT1013 Introduction to Inorganic Chemistry 9. Compounds are 10. referring with the same 4 molecular formula but different arrangement of atoms in space to _ A. isomers B. stereoisomer C. structural isomer D. empirical isomers Which of the structures following represent compounds that are coordination sphere isomers of each other? 11. I. [Co(NH3)6][Cr(CN)6] II. [Cr(N H3)6][CO(CN)s] III. [Co(NH3)S][Co(CN)s] IV. [Cr(NH3)s][Cr(CN)s] A. I and II B. I and III C. I, II, and III only D. I, II, III, and IV only only Which compound I. NOT ionization isomers? are [Co(NH3)sBr]S04 II. [PtCb(NH3)4]Br2 Ill. [Co(NH3)sCI]Br IV. [Cr(H20)s]CI3 and and and A. IV B. II and III C. III and IV D. I, II, III and IV and [Co(NH3)sS04]Br [PtBr2(NH3)4]CI2 [Co(NH3)sCI]N03 [Cr(H2O)sCI]CI2.H2O only only only [See next page SKT10131niroduction to Inorganic Chemistry Consider the 12. 5 following octahedral complex structures, and two different, monodentate ligands X 2 Which one, if any, of the A. 1 and 2 B. 1 and 3 C. 1 and 4 is a involving ethylene diamine and Y. 3 following each 4 pair of optical isomers? D.3and4 13. 14. A crystalline solid has _ A. disordered arrangement B. long C. short range D. None of these A unit cell range orderly arrangement orderly arrangement having dimensions A. cubic B. trigonal C. orthorombic D. rhombohedral a = b = c, a = 13 = V #: 90° is known as - - [See next page SKT1013 Introduction to Inorganic Chemistry 15. M crystallizes in Vanadium a unit cell is 305 pm. What is the 16. 6 body-centred cubic lattice, and the length of the edge of a density of V? g/cm3 A. 5.96 B. 2.98 g/cm3 C. 2.98 x 10-6 D. 5.96 x 1 O�O g/cm3 g/cm3 Potassium crystallizes in a body-centered cubic lattice. How many atoms are there per unit cell? 17. A. 1 B. 2 C. 4 D. 6 MgO has the surround each 18. A. 4 B. 6 C. 8 D. 10 The atomic same crystal Mg2+ ion planes in you find the first-order A. 0.232° B. 2.63° C. 13.3° D. 27.4° as a (n structure nearest as neighbors? graphite crystal = NaCI, face-centred cubic. How many oxide ions 1) diffraction are separated by 335 pm. At what angle would of 0.154 nm X-rays from a graphite crystal? [See next page SKT1013 Introduction to Inorganic Chemistry Determine the miller indice of the 19. given plane 7 as shown below. z 1/2 y o. A. (340) B. (304) c. (201) D. (21 0) Table below, which one of the following complex ions has the correct geometry, coordination number and oxidation state? Complex geometry Coordination Oxidation state of number central cation A. [Ag(CN)2r Linear 2 -1 B. [CuCI4]2- Tetrahedral 4 -2 C. [Cr(C204)3]3- Octahedral 3 +3 D. [Cu(NH3)4(H20)2]2+ Octahedral 6 +2 [See next page 8 SKT1013 Introduction to Inorganic Chemistry 21. 22. 23. 24. 25. Indicate the type of A. sp B. Sp2 C. Sp3 D. sp3cf hybrid orbital used by the central atom in SFs. The geometry of the CS2 molecule is best described A. bent B. linear C. tetrahedral D. trigonal planar Which one of the A. F- B. CH3CH3 C. NH2NH2 D. CH3OCH3 The name following could NOT act for the transition metal B. hexaaquachromium(III) trichloride C. chromium(III) hexahydrate chloride D. chromium(lll) chloride hexahydrate a Co3+ ion which is linked ammonia molecules. Which formula A. Na[Co(NH3)4C03] B. [Co(NH3)4C03]Cb C. [Co(NH3)4C03]C03 D. [Co(NH3)4C03hS04 ligand? _ chloride hexaaquachromium(III) complex ion is formed by ' complex [Cr(H20)s]Cb is A. A as a as correctly represents to one carbonate ion and four a salt of this complex ion? [See next page SKT1013 Introduction to 26. 27. In which of the BCC B. CCP C. HCP D. In all three pesticides 28. 29. metal would have least arrangement, the density would be are need to the promising remove A. It is B. It is accumulated C. It is probably D. It is potentially What is 9 following arrangements, A. Nanomaterials Inorganic Chemistry same pesticides removal or degradation. Why from the environments? change the properties on tools for density? of the soil the surface of soil released to the air forming the haze to enter the food chain after long time graphene? A. Thin film made from fullerene B. A one-atom thick sheet of carbon C. A software to characterise D. A Both crystalline new nanoparticles material made from carbon nanotubes and amorphous, are very important in modern technology. Which of the following is involved in the preparation method of thin film in solid state? I. II. Sol-gel method Thermal oxidation III. Sputtering and IV. Chemical vapour A. I, II and III only B. I, II and IV only C. II, III and IV only D. All of answer deposition deposition above [See next page SKT1013 Introduction to Inorganic 30. Chemistry 10 Fe304 have unique magnetic and electric properties. Therefore, it is suitable for various applications. Which of the following applications is CORRECT for Fe304? I. II. catalyst fog collector III. lithium-ion batteries IV. waste water treatment A. I, II and III B. I, III and IV C. II, III and IV D. All of answer above [See next page SKT1013 Introduction to 11 Inorganic Chemistry Part B Answer ALL 1. (a) Define the term questions in 'amorphous'. (30 MARKS) the examination booklet Give two provided (2) examples of amorphous solids. [2 Marks} (b) A cubic solid is made of two elements P and Q. Atoms of Q at the are at the corners and P body-centre of the cube. compound? Show your work. i. What is the formula of the ii. What is the coordination number of P? iii. Draw a structure of cubic above. [4 Marks} (c) Copper crystallizes in cubic unit cell with the lattice constant a=3.6153 A. The atomic 106 mass of copper is 63.546 gmor1 and the (edge length) density is 8.92 of x gm-3• i. Calculate the number of atom ii. Determine in which cubic form copper iii. Draw the unit cell of copper. iv. Calculate the radius of copper atom. (n) in one cell unit occurs. [BMarks} [See next page 113 Introduction to (a) Coordination industrial 12 Inorganic Chemistry compounds involving the reaction manufacturing. One of coordination of ligand and metal compounds is widely used used in as catalysts is structure molecule; K2[CoCI(enh(CsHs)]. (Ethylenediamine 'en' or ligand has the following H2NCH2CH2NH2). i. Name the coordination ii. What is the oxidation state of the central metal? iii. Highlight 'en' iv. the donor atom and give the likely modes of bonding of the ligand (e.g: monodentate). If 'en' ligand has been replaced by four (4) hydroxo (OH) ligand, coordination v. compound. compound name the new and calculate the oxidation state of cobalt. Draw the structural of both coordination compounds. [10 Marks] Draw (b) (0 01), (1 21) and (1 34) planes z in the given cubic lattice. z z y x x (001) (1 21) (1 34) [6 Marks] END OF QUESTIONS hyaogan 1 H 1,0079 11111!111 blll)1lklm 3 4 Li Be 6.941 9.0122 sodlll11 mlllJleaklm 11 12 Na Mg boron eaton 5 6 B C 10.811 llilImlllll11 12:011 811<;00 13 14 rj� 1 pho AI Si paa,,11I11 19 cad"" SCM:lllm Ulanilm v30QdiJm clYornltl11 lIl<ilgal .... lIlln cot.l� nekel 26.992 copper znc 28.006 3 20 21 22 23 24 25 26 27 28 g�l�m 29 gilllllan�m 30 a 31 32 K Ca Sc Ti V Cr 39.098 rubldklm 40.018 slroniinD 44.956 47.867 ncooklm nlobklm 37 38 40 41 Rb Sr Y Zr Nb Mo Tc 85A68 caeslun 87.62 bllrttl11 88.006 91.224 hafnlun 92.006 95.94 (QB1 IUletium lanlaklm lungslEn 55 56 57·70 71 72 73 74 Cs Ba * Lu Hf Ta W Re Os 132.91 1110.95 dltxlklm 183.1M 186.21 190.23 frenctJm 137.Xl mdltlll seabofQllIl1 bOhrilm hasslll11 mellnerilm 87 88 89·102 103 104 105 106 107 108 109 Fr Ra ** Lr Rf Db Hs ".,., """" 12611 12621 Sg Bh 12211 I?AAi 1?i''''1 '",Q ,- 1271( 17771 12m lenil1arlJm carum prasoodyn'iun strnllrill11 elJ'cpilm S9 61 62 63 glldolnklm 64 lerbilm 58 nDOdymklm 60 Pl'ornelhlJm 57 dysproslJm 66 22.900 2"'305 ytUklm' 39 174.97 178.49 Iawreodtl11 rulhedordkln *Lanthanide series * * Actinide series 50.942 51996 Mn Fe Co 54.936 55.845 rull100kIm 58.933 JhcX1ilm 44 45 palladklm 46 Ru Rh Pd 102.91 Ifdklm 106.42 rflenklm 101.07 Dsmklm 75 76 77 rnoIyIX1enII11 tachneliun 42 43 La Ce 138.91 nclrllum 140.12 Ihorilrn 89 90 prandlnilm 91 Ac Th Pa U m71 232.04 231.04 238.0'.\ 58.$3 Cu Zn 63.546 sllve! 65.39 eadmltl11' 47 48 Ag Ga Ge A 69.723 72.61 7 ildklm Un 49 IlilU 50 Cd In Sn 107.87 112.41 Plaunum 118.71 gold 1 mercury 114.92 1�lklm lead 78 79 bl SO 81 82 Ir Pt Au TI Pb 192.22 195,08 196.97 unununklm 200.59 unurtlltlll 204.38 ununrilklm 207.2 lrlunquadum 110 111 112 Hg Pr Nd Pm Sm Eu 144.24 lJ'onlJm 65 '"'''' hoImilm flI1)IlI11 67 68 Gd Tb 150.36 151.96 i64.93 emer1ckim 151l.93 berl<e!klm 162.60 plJlonilm 157.25 curum Dy Ho "451 calfomklm e!nstallhrn 167.26 fennklrn 94 9S 96 97 98 99 100 ,.,.,,, Pu Am em Bk '2441 1243l 17471 '2471 Cf 12511 B 2 Uuq nepiUnilm 93 Np S 114 Mt Uun Uuu Uub 140.91 92 Ni 11 Er T 1 men Es Fm M 12571 "'''''