Assignment_4 - Chemistry 207 Assignment 4 Due: Friday,...

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Unformatted text preview: Chemistry 207 Assignment 4 Due: Friday, September 28 @2 :00pm Name # ____me Lab TA________—___— Lab Day/Time Practice Problems. ha ter 8: ‘37 1 71 73 77 79 81 8 8'7 1. Vitamin A contains a Chain of C atoms with electrons that can be viewed as confined to a line. Vitamin A absorbs ultraviolet light with wavelength 315 nm, which causes an electron in this part of the molecule to change from the fifth lowest allowed energy to the sixth lowest allowed energy (ground state: "first lowest allowed energy"). A "typical" C-C bond has a length of 144 pm. Use this information to estimate the number of CC bonds contained in this chain. Your answer will be reasonable, but this simple calculation does not give the exactly correct number. En = new“ ' 0E5“ = 5.2 ~_ 11: (t‘~$"\ smu- 1‘ XML” wt LL: ilk) , L: Qfltmuxtfi“)latency") m =Lo'5x1a M M °~l ‘3 2 c (fl (flux! 3 ) (“13 M ) 1' 1.03m? W“ l __ i030 9"“ = 3.15“ A ilk-AI) 11 Lewis W 1 . h In“- {°(rCL* # Lfimh hi1) ‘3‘} h LL; lo) kqx- q‘ ESW‘} ’1‘} 1‘1” SHUJ~ ‘~ Sit-«pi; C‘\(V\]<\"\M , 2. Figures 8-31 shows that the 3pz orbital has one radial node. Use information in Table 8.1 to determine ' the radius of this node in units of pm for the ions He” and Li 2”. Which radius is larger, and why? Rbfl =_ Jr" liT/L (H-c—Wre"°/‘ cr 2» 2%“ ‘N? 4- J ‘1' / T KM“; 23.“ 3Q “NM: wfzhl‘ V‘Wiku au— r 3. 0 2%mit : u mutt = (:5; = 512 W | 3st. 2 2 r u- r i ‘3'" Z n 3 \pa.-LL : [QLFM‘ “01.2. (Lt )< fills. -_ 9 _________’__.___—-———"‘ . 5 pin LtU‘J +L‘L e." {Xffiritqgej A. \xf‘){r madam" (Jauth -Hu—\ ‘u 9.2) in 5° ‘H'w {A ital: rib L4: CinSQr h Hm r,‘ L'.“ Jc’l'ua is L- + 11L 3h; 01“ Ll.” t.) marL Compact XL“... xLL 3?; “Lord alt—HE , 3. Figure 8-35 shorvs radial probability distributions of some of the lower energy orbitals. Sketch rough (no numbers on the axes) plots of the radial distribution function for the orbitals if and 7p. i it? “:53 Q13 V\.:. 3} Q:— 1 J it “LivA Kohl.) 2' Phi-'1 7- fl T's l)“ Hale} : $— KEV. 0 Y‘ 4. In a strange world, mattter is composed of protons, neutrons, and ithacons. Ithacons are identical to electrons in every respect (e.g. mass, charge), except that the spin quantum number can take on any one of five possible values. Every element in this strange world has the same name as its analog in our world with the same atomic number. For example, an oxygen atom has 8 protons and 8 ithacons. (a) Using the "condensed spdf" notation from p. 317, give ithacon c0nfigurations for the ground states of F, K, and Zn. (b) Design a periodic table that makes sense for this world. Rows and columns should have the same meaning as in our world. Draw the first two rows of this periodic table. Each "square" should contain only the abbreviation of that element. (c) Would neon in the strange world have similar chemical and physical properties as neon in ours? Why or why not? (q F‘. \5§25H k! \SSZSer’A 2n: \S§2.S$2\0WESS (C7 fl Q7\75'.C~\ pnrwA‘f‘e, sake t-A L ‘71 Hrs c\3_£3_l\ JL‘h a" Mafia“; '~\\o~\ I is“ Ls Z? . TL Wk<tm thawr~H_m air 5hr“? ML ’15? 255') \5 V133- a Class) 5L&\il WQ mud) fl Q‘K pzq Shea-x}; we *% \A.\JQ ‘5‘1th,]</‘ Vrafy‘} c) a.) r{q\ I ...
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This homework help was uploaded on 02/15/2008 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell.

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Assignment_4 - Chemistry 207 Assignment 4 Due: Friday,...

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