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Coordination number: Quiz

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Question 1: In materials science, the bulk coordination number of a given atom in the interior of a ________ is the number of atoms touching the given atom.
CrystallographyCrystal structureSolidCrystal growth

Question 2: The two most common ________ of carbon have different coordination numbers.
IronArsenicAllotropyOxygen

Question 3: In ________ and crystallography, the coordination number of a central atom in a molecule or crystal is the number of its nearest neighbours.
Periodic tableInorganic chemistryElectrochemistryChemistry

Question 4: In ________ also, only the first or sigma bond between each ligand and the central atom counts, but not any pi bonds to the same ligands.
Inorganic chemistryNitrogenElectrochemistryPeriodic table

Question 5: For an atom in the interior of a ________ the number of atoms touching the given atom is the bulk coordination number; for an atom at a surface of a crystal this is the surface coordination number.
SolidCrystal growthCrystal structureCrystallography

Question 6: In tungsten hexacarbonyl, W(CO)6, the coordination number of tungsten (W) is counted as six although pi as well as sigma bonding is important in such ________.
Iron pentacarbonylMetal carbonylIridiumCarbon monoxide

Question 7: For ________ (NaCl) the numbers of cations and anions are equal, and both coordination numbers are six so that the structure is (6, 6).
Sodium carbonateSodium hydroxideSodium chlorideSodium sulfate

Question 8: Calcium fluoride (CaF2) is an (8, 4) structure, meaning that each cation Ca2+ is surrounded by eight F ________ neighbors, and each anion F by four Ca2+.
IonHalf cellLithium-ion batteryElectrolyte







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