Multiple choice

Which is the rarest naturally occurring element on Earth?

  1. Gold

  2. Antimony

  3. Germanium

  4. Astatine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Astatine is the rarest naturally occurring element on Earth, with only trace amounts (estimated less than 1 gram at any time) found in uranium and thorium ores. It's a radioactive halogen with a very short half-life, explaining its extreme rarity in nature.

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