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Rhodium: Quiz


Question 1: [34] The annual world production of this element is only about 25 tons and there are very few rhodium-bearing ________.

Question 2: The primary decay mode before the only stable isotope, 103Rh, is electron capture and the primary mode after is ________.
Alpha decayBeta decayNuclear fissionNuclear fusion

Question 3: The most stable radioisotopes are 101Rh with a half-life of 3.3 years, 102Rh with a half-life of 207 days, 102mRh with a ________ of 2.9 years, and 99Rh with a half-life of 16.1 days.
Radioactive decayNuclear fissionHalf-lifeCosmic ray

Question 4: Plated rhodium, made by ________ or evaporation, is extremely hard and is used for optical instruments.

Question 5: [14][15] He made this discovery in ________ using crude platinum ore that he presumably obtained from South America.
ScotlandWalesUnited KingdomEngland

Question 6: (This can also be observed in the neighborhood of ________ (41), ruthenium (44), rhodium (45), and palladium (46).)

Question 7: All other metals like ________, lead, palladium and rhodium were precipitated with zinc.

Question 8: In 1979 the ________ gave Paul McCartney a rhodium-plated disc for being history's all-time best-selling songwriter and recording artist.
Land speed recordNBA recordsGuinness World RecordsMotorcycle land speed record

Question 9: It is not attacked by ________: it is completely insoluble in nitric acid and dissolves slightly in aqua regia.
OxygenAcid dissociation constantAcidAcid–base reaction

Question 10: Rhodium is used as an alloying agent for hardening and improving the corrosion resistance[4] of platinum and ________.


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