1GLY4200CName 90 pointsSeptember 21, 201118 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)3T 1. 1.The nucleus of an atom is about 100,000 times smaller than the entire atom.5F 2. The size of a sodium metal atom (metallic radius) is smaller than of the sodium cation(ionic radius).5T 3. If one orbital contains two electrons, the "s" quantum number for these electronscannot be the same.2F 4. Bohr's model correctly explained the line spectra of all elements known at the time.0F 5. Cations are atoms which have lost one or more electrons, and which are negativelycharged.8T 6. The bonding in water (H2O) is more covalent than in sylvite (KCl). (Relevantelectronegativities: Hydrogen, 2.1; Oxygen, 3.5: Potassium, 0.9; Chlorine, 2.9)2T 7. The dimensions of density are often expressed as g/cm3 in mineralogy, although theSI units are kg/m3.6F 8. The p subshell has m values of O, +1, or +2. Since l = 1, ml = 0, +1, or -11T 9. The number of protons in the nucleus of an atom determines the type of element.15F 10. Ionically bonded substances are molecular, i.e. exhibit properties which may beexplained in terms of interactions between molecules. Ionic bonds are non-directional,making the concept of molecule non-functional. 10T 11. When a piezoelectric crystal is subjected to an electric current the crystal willphysically deform.1F 12. Perfect cleavage in the British system is better than perfect cleavage in the Americansystem.
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