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Cobalt: Quiz

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Question 1: ________ require small amounts of cobalt which is the basis of vitamin B12.
MammalPrimateMammal classificationEven-toed ungulate

Question 2: Common ________ of cobalt include +2 and +3, although compounds with oxidation state +1 are also known.
Oxidation stateHydrogenOxygenOxide

Question 3: The primary decay mode for isotopes with atomic mass unit values less than that of the most abundant stable isotope, 59Co, is electron capture and the primary mode of decay for those of greater than 59 atomic mass units is ________.
Alpha decayBeta decayNuclear fissionNuclear fusion

Question 4: ________ cobalt occurs as two crystallographic structures: hcp and fcc.
MetalNonmetalNoble gasHalogen

Question 5: The Curie temperature is 1115 °C, and the magnetic moment is 1.6–1.7 Bohr magnetons per ________.
ElectronMatterPhotonAtom

Question 6: In 1938, John Livingood and ________ discovered cobalt-60.
Glenn T. SeaborgRoger AdamsMelvin CalvinRonald Breslow

Question 7: [5] The mineral cattierite is similar to ________ and occurs together vaesite in the copper deposits in the Katanga Province.
QuartzPyriteOxygenGalena

Question 8: Cobalt has a relative permeability two thirds that of ________.
IronOxygenChromiumZinc

Question 9: Smalte (cobalt silicate glass) and cobalt blue (cobalt(II) aluminate, CoAl2O4) gives a distinctive deep blue color to glass, ________, inks, paints, and varnishes.
SolidCeramicCeramic materialsCeramic engineering

Question 10: is +1.92 V, far beyond the one for ________.
ChlorineHydrogenNitrogenOxygen







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