1GLY4200CName 90 pointsSeptember 21, 201017 took exam - Numbers to the left of the question number in red are the number of incorrectresponses. Instructor comments are in blue. Florida Atlantic UniversityMINERALOGY -- MIDTERM 1 EXAMINATION KEYTrue-False- Print the letter T or F in the blank to indicate if each of the following statements istrue or false. Illegible answers are wrong. (1 point each)4T 1. In any stable chemical bond, energy is released as the two atoms or ions combine. 3F 2. Anions are atoms which have gained one or more electrons, and which are positivelycharged.9F 3. A clear, colorless piece of calcite is said to have a transparent luster. Luster refers toreflected light, not transmitted.2F 4. At room temperatures, ionically bonded substances are good conductors of electricity.1T 5. Shortwave ultraviolet radiation is dangerous to eye tissue.3T 6. Ionic bonds are formed between widely separated (in the periodic table) elements. 1T 7. Iridescence is caused by interference of light in thin films of different refractiveindices and varying thickness. 1T 8. Quantum mechanically allowed states require that the number of wavelengths of theelectron per orbit be integral.1F 9. Specific gravity has the dimensions of g/cm3 in mineralogy.0T 10. A curving fracture typical of broken glass is said to be conchoidal.4F 11. The size of a lithium metal atom (metallic radius) is smaller than of the lithium cation(ionic radius).6F 12. A layered structure with a repeat pattern of ABCABCABC...is known as hexagonalclosest packing. This is cubic closest packing
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