Exam 4 p1 - CHEM 113 NAME(LAST(First Total Ponds(DO 1(a(1...

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Unformatted text preview: CHEM 113 5/8/2006 NAME (LAST) (First) Total Ponds : (DO 1 (a) (1) In going across the first-row transition metals, what happens to the energy of the d orbitals? Why? (in four or five words) ~Deacenses LCM-Ase 55% increasing nuderer Charge bikini" Sen/cg +0 giabiliza GiCcl'FomS in Ha“; “Minis Li] electrosi‘oiic «Hired-Ne {okay (b) ( a) What is the maximum oxidation state that a transition metal can have? (ten words or less) ((M‘S Led emu-2%) The we corrtsfomumj +0 \oSS 1»? a“ ”i’ine. Valence" s and at Eleel‘TolAS flier Hag Erxtvxsii—bu nae-Mg? . (c) (I) In general termskwhich elements in a glven perlod are unlikely to show the maximum oxidation state? \ loose: ‘icwaxrlé “Has anal ‘fivwe {mucafifij muciear charge, wake; reMOVrAQ cg eigcfi‘fmxs iW-I’wsiwfll] oceg‘wft ~ “idol. “if: usu‘gtlj +1 2(a) (L) Explain why compounds of copper(II) are generally colored, but compounds of Cu(I) '0 and Zn(II) are not. C“ (11): [Ar] “9 (La-3; [Ar] Ed": Z“ @I) also Dir—l 34 Color in ‘i’dw temple“; is clue in transfer a? an clad-rm {41% am: at orlof'laé +0 (“\O'i'Ler a? LI Ler eAer'jfl WWI—la is hot gull - Tint energies 0(— HAESe— aleci‘rom‘c 'i"(0m5i'i'ion$ Match be energies of. HIGH: flak? Phal'bm- The 3d“, bwkm‘ms have {filled (b) (1') Write electron configurations for the following. d Grhifixis. Ni [Ar] “:51 3:13 Ni2+ {Atlgoie é iitcffons 41'3 (I>S‘f Wt; A .—-'i’in¢3 Scield “Q. o\ electrm-s were afiafivelj {mu nuclearplqraaw'b jTQAi‘er 3. (z) (a) A coordination compound of cobalt(III) contains two ethylenediamine (en) molecules, Pehmné one sulfate ion, and one chloride ion. Addition of aqueous BaClz solution to an aqueous solution of the compound gives no precipitate. Addition of aqueous AgN03 , however, produces a white precipitate. Propose a structure for this coordination compound. PRC/Liming 0 7+ QaSOL‘ i; not pwafihh-J H \N, i -‘o\S// _ io颢6£€ SOH‘I' (‘5 (Gouncl +9 +£9- z 2Cr\§0/ \\O 8Q Coioafle 4.5 a £31113. H5.“ phat» Cfum‘i‘efiom 1‘, fins: [:7 Pfegipi‘i'q'i'eé L); mi. A3 ”0; jiv i3 {hmlubic Aace . (b) ( \) Draw the structure of a coordination isomer of this compound which has the same geometry but no counterions. some kMuiag bu‘l’ «it Weren't wMPfisH-r‘aw L1G ' (c)( I) On thermodynamic grounds, is formation of this isomer favored or not favored? Explmt enthalpies of formation are not very different.) rtgcr'i ‘i‘0 256'] bit I); {unhonfi ...
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