14. A chemical bond length is closed to:
(A) 10 mm,
(B) 1 nm,
(C) 0.1 nm
(D) 0.1 pm or
(E) 1 pm.

15. A C–C bond dissociation energy is closed 1o: (A) 1 kcal/mol. (B) 10 kcal/mol. (C) 100 kcal/mol. or (D) 1000 kcal/mol.

16. The complex that does not obey 1 8-electron rule is: (A) [(η5-C5H5)FECI(CO)(PPh3)] (B)[Cr(CO)3(SiMe3)(Cl)(NCMe)2] (C) [Co(PPh3)2(AsPh2)CI3]- (D) [Os(N)Br2(PMe3)(NMe2)]- (E) (Fe(NMe3)6]2+

17. Complexes of general formula. fac-[Mo CO)3(phosphine):] have the C-O stretching frequencies as given below.Phosphines: ( A ) PMe3: ( B ) PPh2CI； ( C ) PF3； ( D ) PCI3One of vco (cm-1) of higher frequency: (i) 2090: (i) 2040； (iii) 1977: (iv) 1945The correct combination of phosphine and stretching frequency is (A) ( A )-(i)； ( B )-(ii): ( C )-(iii): ( D )-(iv) (B) ( A )-(iv): ( B )-(iii)； ( C )-(ii): ( D )-(i) (C) ( A )-(iv): ( B )-(i): ( C )-(iii)； ( D )-(ii) (D) ( A )-(iv): ( B )-(iii): ( C )-(i)； ( D )-(ii) (E) ( A )-(i):( B )-(iv)； ( C )-(iii): ( D )-(ii)

18. Given a qualitative d orbital splitting diagrams of three-fold symmetric homobimetallic complexes shown on the right. The metal-netal bond order of [W2Cl6] is likely to be:(A) 1.(B) 2, (C)3. (D)4. or (E) 5.

19. The complex ion [Cr(CN)6]4- has magnetic properties that correspond to how many unpaired electrons? (A)0.(B)1. (C)2, (D) 3. (E) 4.

20. Ethylenediaminetetraacetic acid (EDTA) is: (A) not useful as a chelating agent. (B) an effective antidote for heavy metal poisoning (e.g. Pb2- and Hg2- ). (C) a monodentate ligand. (D) known to form unstable complex ions with Fe3-. Hg2-, and Zn2-, (E) known to form complexes with platinums that inhibit the growth of cancerous cells.

21. Solutions of the complexes [Co(NH3)6]3- ( A ). [Co(H2O)6]3-( B ), and [CoCl4]4- ( C ) are colored. One is purple. another is yellow, and the third is blue. Which of the following combination is correct? A color wheel shown below is helpful in determining this relationship.(A) A : bule: B: yellow； C: purple  (B) A : yellow: B: blue: C: purple (C) A: purple； B: yeillow； C: blue Ccan (D) A: yellow； B: purple； C: blue (E) A : bule； B: purple: C: yellow 

22. The compound that can undergo oxidative addition reaction with Cla is: (A) [(η5-C5H5)2Fe],(B) [Mn(CO)5]- , (C) PtCl4, (D) [(η5-C5H5)Mo(CO)3]-, or (E) [Ir(CO)CI(PPh3)2].

23. What are the states (with J values) of 'D term? (A) 3D3,3D2,3D1. (B) 3D2,3D3,3D4. (C) 3P1, 3P2,3P3. (D)3P2, 3P3,3P4. (E) 3F2,3F3, 3F4.

24. Which of the following is labile? (A)[(η5-C5H5)2Ru],(B) [Mn(CN6)]3-,(C)[V(H2O)6]2+,(D)[CoF6]3-,or (E)[Pt(CN)4]2-

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