MSE 200 - a neutral single or multiply charged ions b close...

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MSE 201 Practice Exam – Selected Sample Qustions No notes, books, or information stored in calculator memories may be used. Cheating will be punished severely. All of your work must be written on these pages and turned in. To receive full or partial credit on numerical problems, you must show your step-by- step calculations. Units must be shown and all plots must have labeled axes . Be sure that you read and answer all parts of each question . Neatness and clarity are very important! Constants, equations, and data are given on the last page of the exam. Multiple choice questions: ____ Covalent bonds form between atoms that have a. very similar atom diameters b. very similar electronegativities c. very similar atomic weights d. all of the above ____ An atom that tends to gain electrons is called a. charge neutral b. electropositive c. electronegative d. all of the above ____ Atoms of the same element having two or more different atomic masses are called
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Unformatted text preview: a. neutral, single, or multiply charged ions b. close and loosely packed atoms c. isotopes d. quantum pairs ____ Face centered cubic (FCC) and hexagonal close packed (HCP) unit cells a. are each composed of close packed planes b. have identical atomic packing factors c. have different numbers of close packed directions d. all of the above Direction/Plane Question Indicate the direction indices for the crystallographic direction indicated by the vector. Use the correct notation for directions. Calculation Question Rhodium has an atomic radius of 0.1345 nm, a density of 12.41 g/cm 3 and an atomic weight of 102.91 g/mol. By calculation, determine whether rhodium is BCC or FCC. Calculation Question Al is FCC. The atom radius is 0.286 nm and the x-ray wavelength is 0.1524 nm. Find the diffraction angle 2 θ for the 2 nd diffraction peak....
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