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

Romania

14%

78%

Ghana

76%

Malaysia

70%

the Netherlands

17%

11%

70%

Unknown

24%

12%

64%

Greece

28%

64%

Vietnam

14%

21%

64%

New Zealand

38%

61%

Germany

40%

57%

107

the Philippines

22%

14%

56%

Poland

32%

54%

5813

Canada

34%

52%

India

30%

11%

50%

594

Australia

37%

50%

the United States

31%

10%

49%

336

the United Kingdom

34%

11%

47%

169

Pakistan

36%

19%

36%

Austria

12%

43%

12%

31%

Nigeria

14%

41%

14%

28%

101

Republic of Ireland

21%

42%

15%

21%

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