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test 2 fall 03

# test 2 fall 03 - Fall 2003 CHE 352 swam-cl Mahﬁals Quiz#2...

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Unformatted text preview: Fall 2003 CHE 352 swam-cl Mahﬁals Quiz #2 Crystallography Name: M 1. Consider the ﬁgure below. What are the indices for the directors and planes indicated. PIaneA : .L : 0 _ (heated aria“ @51575 k : 2 3 0 (06 I) v i A edge center)» (Lam CZ] Z : f” Blane" _ .. ~ Plane F v Direction D calf DirectionC / Owl‘l‘ﬂ@éfd#m£ [oil-Ill090,-//' VgZﬁ/y [07/] 0/“ I :71}?! irection D , LUN’X OI‘I‘7/‘n poi/Iggy) £27 Ski/“4‘0; Ved‘ar "' 20; 0 :40, I I _, —- 2. Consider the following data for ban'um metal. :7 [:2 U ’1 It is body-centered cubic Atomic number = 56 atomic radius = 0.22 nm Atomic mass = 137.3 glmole density = 3.5 g/cm3 = 3.5 Mg/m3 lake/177\$ 4: 'IL Z I (located at ; edge center) Flam F Direction C a) Determine the relationship between a0 and R5. . You must show how you obtained your result for full credit. - t ‘ For 6C6) add/us slot/M 61/047 35%, men. I If/Q: fade E7 1127044] bag a0: £744: 0,, " e i W? b) What is the linear density for the [111] direction? (2 +1) ﬁzzy/7,5 2? W {El/Jug“ : 5 ac aﬁqaolé' ’ w a 2 Wmé ”‘ “- ,ZZMM 7?![7%<Kﬂ W 2&2 £2.27 nm (Continued on reverse) ﬂ c) What is the planar density for the (210) plane? L 32420 , (2,0) :7 ,nwcyﬁ. 294,125, ? F ‘ ,_ 453,7);(29/215 .. \[email protected] 6310;64. (/3740 >00 / m 34/95!” L f‘b ‘fgfbﬂm .3 . 7, Fill the Blank. : #75 «fame/7”” Complete the statements below (no more than three words will be required). l in § (\l ': d'rections that all have the same characteristics are called a(n) rof a crystal structure is the fraction representing the volume occupied ivided‘by total volume. 5. The group of atoms associated with a lattice point in a crystal structure is known as its Mr V . l 6. A materials is I» / CL structure. when it exists in more than one crystal Short Answer: 7. Brieﬂy ...What is the difference between lattice constants and lattice coefﬁcients? Leaf/lice wngﬁzgx/ﬁé ﬁb/Qllfwfz/filmfzé/{Oﬂf o 8 ’ Z, Melee [len‘é , l I dimensions f farm; 075 Me 32:334 sews ...
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