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a) Explain why the spectra for [V(H20)s]+ complex exhibited two absorption bands. (5 marks) Terangkan mengapa spektra bagi kompleks (V(H20).J* menunjukkan dua jalur serapan. (5

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a) Explain why the spectra for [V(H20)s]+ complex exhibited two absorption bands. (5 marks) Terangkan mengapa spektra bagi kompleks (V(H20).J"* menunjukkan dua jalur serapan. (5 markah) 0 5.000 10.000 15.000 20.000 25.000 30,00 35.000 2.00 1.000 667 1 500 400 286 b) Complex (Cr(H20)]* has absorption at vi=17,000, 1= 24,000 and 1=37,000 cm Using Tanabe-Sugano diagram, estimate values of A and B for this complex. Given the value for A/B from diagram is 24. (20 marks) Kompleks (Cr(H2O).P* mempunyai nilai serapan pada =17,000, v= 24,000 dan 13=37,000 cm. Dengan menggunakan rajah Tanabe-Sugano, anggarkan nilai 4. dan B untuk kompleks ini. Diberi nilai 4/B dari rajah ialah 24. (20 markah) c) Sketch a reaction apparatus for a typical coordination complexes preparation which involve heating the reaction at reflux condition. (3 marks) Lakarkan radas tindakbalas bagi penyediaan kompleks koordinatan yang biasa yang melibatkan pemanasan tindak balas pada keadaan refluks. (3 markah) d) Identify the types of reactions as stated in the table below and explain your answer: Kenalpasti jenis tindak balas seperti dinyatakan dalam jadual di bawah dan jelaskan fawapan kamu: Condition before the Condition after the Type of reaction reaction reaction Jenis tindak balas Keadaan sebelum tindak Keadaan selepas tindak balas balas Fe + O2 Fe 03 Fe(CO) Fe(CO).CI ii. Fe(CO) Fe(CO). ili. (6 marks/6 markah) You are given two square planar complexes of Pd(PPha) Cl2 and Pd(PPhy),(CO), determine which of these is the labile and inert complexes, explain your answer briefly. (4 marks) Anda diberikan dua kompleks satah segi empat sama Pd(PPha) Cl2 dan PPPha):(00), tentukan yang mana kompleks adalah abil dan lengai, jelaskan jawapan kamu dengan ringkas. (4 markah) e) f) = By using the combination of these species (Fe, NH, Cl and CO), write an appropriate chemical equation for each of the preparative stated method. The final product should be in octahedral shaped structure (MLS; M = metal centre and L = ligand). Dengan menggunakan kombinasi spesies (Fe, NH3, C dan Co), tuliskan persamaan kimia bagi setiap kaedah penyediaan yang dinyatakan. Hasil akhir hendaklah berbentuk oktahedral (ML6; M = pusat logam and L = ligan. i. Addition reaction (3 marks) Tindak balas penambahan (3 markah) 1. Substitution reaction (3 marks) Tindak balas penukargantian (3 markah) Photochemical reaction (3 marks) Tindak balas fotokimia (3 markah) Draw the molecular structure of Zeise's salt K[PtCl (C2H.)}H20 and state a reason why it should be prepared in the absence of oxygen. (3 marks) Lakarkan struktur molekul garam Zeise K[PICI (CH)],0 dan nyatakan satu alasan mengapakah ia perlu disediakan dalam keadaan tanpa oksigen. (3 markah) iii. h) Explain on BOTH complexes, why (FeF:] Is colourless and [CoFP is coloured in aqueous solution. (4 marks) Jelaskan bagi KEDUA-DUA pengkompleksan, mengapa [Fefs p adalah tidak berwarna and (CoFP adalah berwarna di dalam larutan akues. (4 markah) i) Calculate the magnetic moment AND draw the molecular orbital diagram for following complexes: Kira momen magnetik DAN kukiskan gambarajah orbital molekul bagi kompleks berikut: i. (Cr(CN).]" (6 marks/ 6 markah) ii. MnF (6 marks/ 6 markah) j) Predict and explain the precised structure of [Fe(CN)}" complex. (3 marks) Ramal dan terangkan struktur tepat bagi komplek [Fe(CN).J" (3 markah) k) Classify the following borane molecules by structural type AND draw the structures of these molecules according to Wade's rule. Kelaskan molekul borana berikut berdasarkan jenis struktur DAN lukiskan struktur molekul ini berdasarkan hukum Wade. Bulur? (3 marks/ 3 markah) i. 1,2-CBuchua (3 marks/ 3 marka)

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