Solids Worksheet Answer Key, Lecture notes of Chemistry

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WORKSHEET-SOLIDS Set A: 1. Indicate the type of crystalline solid each of the following would form upon crystallization. Tell what type of particles are located at the lattice points and the types of attractive forces that exist between the particles. Type of crystalline solid | Type of particles at ] Altractive forces between lattice points lattice points SiC Netuark = Cova | a trems Covatend lo mdo 7 Moltecunar| molecumg TMF +S Dipole - Di pole cu te z Meret Arrract TUM Wet ureew| 5 Meta whtc | Catan Cart Wo and Seaot e- i 7 2 Molecurar | motlecuss/ EME. Drs PERT NHACIOg Curtiows | Electoostetia Attracth - THAN Tore S Aut 2. Crystalline aluminum has cubic structure. The unit edge length is 4.440 x 10-8. The density of solid aluminum is 4.096 g/cm. Calculate the number of aluminum atoms in one unit cell. Answer=8.00 atoms/unit cell 3 “23, 3 Volunizeen = G? = Cure x07 Few) 3 2 BA SOR em one one - 3 ~~ ot = 4.046 4) yy B.ATO xKtOrF ow OeUms PLE TAR Unit cell Cun? = BTBsS x vot 4 AN Wwe mY ->h B.TBS xo Fg AN LY Wwot AN bo and Make AL Batu we eg wen * we 3. The volume of a manganese atom is 9.21 x 10-24 cm 3. Manganese crystallizes in a face-centered cubic system. What is the density of manganese? Answer: 7.34 gicm3 Setup: 3 Le VON we = +> Te - 3 Aa xo tows = a mr r= 1.30 x107F ew fue e@ az . vu -e a> 9 & 61.30 XO FEY © 3, TT RO Tow aro. pC L.3o xO ew! — Ve Joe zd. B. THawa My. Lett yd eu Ser RQ MA mote tn G0 & x1078 arowrs var = me 1 = We uy Dr Bibset poe Se a (3-017 x 10™2em) es