Multiple choice general knowledge science & technology

Which is the lightest element

  1. Sodium

  2. Lithium

  3. Sulphur

  4. Potassium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lithium has the lowest atomic mass (6.94) among the metal options provided, making it the lightest metal in this list. Hydrogen is actually the lightest element overall but isn't among the choices.

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