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Leader: Course: Exam 2 Review Supplemental I nstruction lowa State University 1. Emily M Chem 167 Instructor: Houk I)ate: 3ll0l14 Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? a) Mg>NDFSi>Ar b) Ar>Si>PNDMg c) Si>F>Ar>NDMg @ N*tvtg>Si>F>Ar e) 2. Ar>P>Si>Mg>Na Which of the fotlowing species has the tu.ge#uaiu"t a) Rb* b) St'l @ B." d) Kr e) Ar 3. 4. hr\$t\ Nq, 1ar1+s2ldr0+p' is the electron configuration of \*b* 4ol-ftS "lhrrn !frtffYl atom. - What is the grormd state electron configrration for Si? 6.1 ssLi* 5. Which of the following is an excite&state eloctron configuration? a) ls2 2s2 3pt b) 1s2 z* zp6 (o)1s2 2s2 3sl Y 2i aJ 6. tnrt 4s2 3dro 4pr Which of the following has the smallest ionization energy. a) Me b) Se ,'e:) 4l a.{,t @su d) Po ; 7. Which one of the following sets of quantrm numbers corresponds a) n: 6, l: l, ml= -Z,ms: *lD b) n: 6,1:2,m1:0, ms: -ll2 q) n:5,1: 1, ml: -l,ms: -ll2 @ o: O, f: f, ml= -1, ms: *1/2 S=0 1060 to a 6p electron? ,, \= \ Hixson-Lied Student Success Center * ,, d --L,l=3 515.294.{fl24 * [email protected] * http://www.si.iastale.edu 8. Which one of the following represents an acceptable possible set of quantum numbers the order n, l, ml, ms) for an electron in an atom? (in z, l,-1,+ll2 @ b) 2,1,0,0 c) 2,2,0,+lD d) 2,0,1,-lD e) 2,0,2,+ll2 9. The wavelength of a photon that has energy of 6.33* l0-'*J is {--\y 10. The retina 4.6f lD -rB,]. = (b.t tb* / l"*b eye can detect light when radiant energy incident on it is ut J. For light of 600 nm wavelength, how many photons does this correspond of 16-,"dry++ " a nr$an to? 0'ego+on = I \0.36r 1,I-lf- + =(r.uw r 16-?7 {sY!!$*t) -_ S,g i x to-tT/lkafort D 4.oxta-''r.+ffir@ ye[o#ilih, *i t waElea@ or95ffi? l. whar is the frequency of V =.>= 3,0 [ rub fn ls -4rn -- corresponds to photons with the largest energy? ",r\,/\--, *,\,AAJ Nmltltngh* r\ xE t snu,\\u tNfi\ltlfi${t = h5W ttu{unnut {'- x'h', a' bi$}er ' fnDW X is AE : 3.31 x lO20J. Calculate the maximum wavelength of light that can photo eject an elecfion from metal X. { 13. The energy required to remove an electron from metal c lt" 14. = (b = 3'3lY to'!n{ ff\ * t,:I^+b.;erA ) -- (r.00rlo-to 5ffi-dlFfrtriclt-are/at light 616.4 and 638.3 nm" at many wavefengths, A neon atom emits Both of these transitions are to the same final state. a) What is the energy difference benveen the two states for each transition? b?--Eyhotan =P a5= tc=ft^^tn,ttoyrt.4t-^.3^^-,^r-,-\l -btu'4 6rnx !1glo ,,"F;PJi3;;ffi**;;;;'il,ffivereuf,;###.ffi rientr \ of the uts[L: would wurllu be uc the frequency (rl LllE U.EquErrvJ u' 4@ r#ffi Lrrs - --( = 4,L?-r b-r -;;,,r, --.- ,t d;3w ll,6tiila:i% : I I I U0 ^lA ""Ju hffi*r;,;;r;ffi 15. Given the electronegativities below, which covalent bond is most polar? Element:HCNO 2.1 2.5 3.0 Electonegativity: 3.5 a- C-H 0. 4 b. N-H b.9 €) GH l.rl d- O-C 1,0 e. GN S.5 16. Amorg the following molecules, only a BeClz _ is polar. -/ fi?l /-N Y etct, 6, e. \ Crz ( 17. Draw Lewis structures for the hybridization of the ;i"- a- cHzFz a [.- atom, and the bond angle(s). (,, +AAldfd i N,, l&,6' 'P' " b. OFz c. VOr'7 d. following molecules. Give the shape of the molecule, .7-ti 'i.i ''i1'' []-i "",1**#, ) UItl ; sb3 ; 1l0q,5o tr'3urut \qtun'Od ;s]31 <lgq''' tt\qutu\ $nnri st't t'l-bo ,#-t\a e. B"FrY" :(- W)I' linnc; sU tBo, J r. PBr5 ii u"'\& 6 drJ {frqunut \r,\ruln,dd i Qa,lnt' 18. The total number of o bonds in the H-CEC ,CEC-CEC-CEN molecule is a)4 a B?, e) 15 ft\su B 4r bonds m* 6 t9. In ethylene (H2C7CH2), the C=C double bond results orbitais and overlap orbitals on the C atoms. a) o, tp, rr, b) c) of --TD 4Y p overlap "f + o,#,",# o, sp3, er, s o"Pl'o'P @ e) 7L sp-, o, p 20. Which drawing represents a ec bonding molecular orbital for a homonuclear diatomic molecule? t)5 ,-.. * - l0 c) \", d)o ,\ 21. Which of the following molecular species is stabilized by resonance? a) COz :N=f.f-il, N-NzN @ *,- c) BH: d) Or'e) HCN \\=\[= N 22.What is the coordination number for (a) simple cubic (b) body-centered centered cubic? SU=tp cubic (c) face- (Lt=tt SL*B 23. Nickel crystallizes in a fuce-centered cubic lattice.If the density of the metal is 8.908 g/"rrf , what is the unit cell edge length in cm? theory ofbonding in solids. (a)Sr (b)Ti (c)C (d)Si doped with tfttur Wltr L < Si \rtulttor As (e)Si aS duF\ *l fl* .r,* btrtrltl,{\\u