Multiple choice

Which of the following is the lightest metal?

  1. Mercury

  2. Silver

  3. Lithium

  4. Lead
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lithium is the lightest metal with an atomic mass of approximately 6.94 u and density of 0.534 g/cm³. It's the first element in Group 1 (alkali metals). Mercury is a liquid metal with high density, silver has atomic mass 107.87 u, and lead has atomic mass 207.2 u - all much heavier than lithium.

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