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 6.94 and density of 0.534 g/cm³. It's so light that it floats on water and is the first element in the alkali metal group. This property makes it invaluable for lightweight batteries and aerospace applications where weight reduction is critical.

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