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Platinum group: Quiz


Question 1: The Spaniards named the metal platina ("little silver") when they first encountered it in ________.
Quindío DepartmentColombiaValle del Cauca DepartmentColombian armed conflict (1964–present)

Question 2: All of these metals' final chemical compounds can ultimately be reduced to the elemental metal using ________.

Question 3: The platinum metals have outstanding ________ properties.

Question 4: A first step is to dissolve all the metals in ________ forming their respective nitrates.
GoldChlorineChromiumAqua regia

Question 5: The six platinum group metals are ruthenium, rhodium, palladium, osmium, ________, and platinum.

Question 6: The two remaining metals, ruthenium and osmium, form ruthenium and osmium tetroxides after ________ has been added to solution.

Question 7: These elements are all ________, lying in the d-block (groups 8, 9, and 10, periods 5 and 6).
ActinoidPeriodic tableTransition metalNoble gas

Question 8: They are highly resistant to wear and tarnish, making platinum, in particular, well suited for fine ________.
BrassBody piercingGoldJewellery

Question 9: Other distinctive properties include resistance to chemical attack, excellent high-temperature characteristics, and stable ________ properties.
ElectromagnetismElectric chargeElectricityElectric current

Question 10: Naturally occurring platinum and platinum-rich alloys have been known by ________ Americans for a long time.
Paleo-IndiansPre-Columbian eraIndigenous Amerindian geneticsKennewick Man

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