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Lutetium: Quiz

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Question 1: The primary decay products before 175Lu are element 70 (ytterbium) isotopes and the primary products after are element 72 (________) isotopes.
TitaniumTantalumHafniumNiobium

Question 2: The known isotopes of lutetium range in ________ from 149.973 (150Lu) to 183.961 (184Lu).
Avogadro constantBoronAtomic weightFluorine

Question 3: Lutetium (pronounced /ljuːˈtiːʃiəm/ lew-TEE-shee-əm) is a chemical element with the symbol Lu and ________ 71.
Atomic numberHafniumPeriodic tableLanthanum

Question 4: Metal dust of this element is a fire and ________ hazard.
SunEnergyExplosive materialExplosion

Question 5: Lutetium is a silvery white ________-resistant trivalent metal.
AluminiumZincCorrosionChlorine

Question 6: [14] Pure lutetium ________ has only relatively recently been isolated and is very difficult to prepare.
HalogenNonmetalNoble gasMetal

Question 7: The primary decay mode before the most abundant stable isotope, 175Lu, is electron capture (with some alpha and positron emission), and the primary mode after is ________.
Nuclear fusionNuclear fissionAlpha decayBeta decay

Question 8: ________ precipitates out of solution as hydroxide and is removed.
ThoriumPlutoniumLanthanumUranium

Question 9: However, stable lutetium can be used as ________ in petroleum cracking in refineries and can also be used in alkylation, hydrogenation, and polymerization applications.
OxygenAlkeneNitrogenCatalysis

Question 10: The main mining areas are China, United States, Brazil, India, Sri Lanka and ________.
AustraliaBarbadosUnited KingdomCanada







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