Midterm1_Sol - EGN3365-Structure and Properties of...

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TTR 8:30-9:45, Tuesday, Sept 30 th , 2003 Instructor: Dr. S. Seal Midterm 1: 100 points: Solutions =============================================================== Note: 1eV = 1.60 x 10 -19 J; Planck’s constant, h = 6.63 x 10 -34 J.s; Velocity of Light, c = 3 x 10 8 m/s Electron Charge, e = 1.60 x 10 -19 C; Permittivity of free space, ε 0 = 8.85 x 10 -12 C 2 /N.m 2 Atomic Mass: Cu - 63.54 gm/mol; Ni - 58.69 gm/mol Avogadro’s Number, N 0 = 6.023 x 10 23 mol -1 1: Multiple Choice: (25 points) 1. Atomic number of an atom is a) no. of atoms in a molecule of the element b) no. of neutrons in its nucleus c) no. of protons in its nucleus d) total no. of protons and neutrons in its nucleus 2. Electronic configuration of Fe 2+ ion (Fe: Z=26)is a) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2 b) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 c) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2 4p 2 d) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 4 4s 2 3. Name three different types of bonding in materials. Primary Bonding: a) Ionic Bonding b) Covalent Bonding c) Metallic Bonding Secondary Bonding a) Permanent dipole Bonds b) Fluctuating dipole Bonds 4. Atomic packing factor for BCC is greater than FCC. True or False
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This note was uploaded on 01/13/2011 for the course EGN 3365 taught by Professor Yong-hosohn during the Spring '08 term at University of Central Florida.

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Midterm1_Sol - EGN3365-Structure and Properties of...

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