Which of these elements is not a precious metal?

Platinum

Ruthenium

Silver

Lanthanum

Lanthanum is a chemical element with symbol La . It is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. Lanthanum does not belong to precious metals.

Michael Mandiberg wikipedia → Precious metal

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Metals quiz Chemistry quiz

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Answers by country

the Netherlands

20%

80%

Ghana

76%

Romania

15%

76%

Malaysia

70%

Unknown

24%

12%

64%

Vietnam

14%

21%

64%

Germany

35%

61%

New Zealand

38%

61%

Greece

30%

61%

the Philippines

22%

14%

56%

Poland

32%

54%

5650

Canada

34%

52%

India

30%

11%

50%

593

Australia

37%

50%

the United Kingdom

35%

10%

49%

162

the United States

32%

10%

47%

317

Pakistan

36%

19%

36%

Austria

12%

43%

12%

31%

Nigeria

14%

41%

14%

28%

101

Republic of Ireland

23%

41%

11%

23%

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