Which of these metals has the lowest scratch hardness on the Mohs scale?
Question and options
Which of these metals has the lowest scratch hardness on the Mohs scale?
Caesium
Lead
Gold
Silver
Answer and explanation
Correct answer: A - Caesium
Caesium has the lowest mineral scratch hardness among these metals. The tabulated values are 0.2 for caesium, 1.5 for lead, and 2.5 for both gold and silver.
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