Multiple choice general knowledge science & technology

The most expensive substance in the world is

  1. cesium

  2. californium

  3. nobium

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

Californium is considered the most expensive substance in the world, costing approximately $27 million per gram. It is a radioactive element with very limited production and specialized applications in nuclear reactors and detectors. Cesium, niobium, and anthracene are much more common and less expensive.

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