Can you name the First 20 elements on the period table?
- Answers do not have to be guessed in order
- Answers must be entered with the atomic number first. For example, the 53rd element is iodine. To get this answer you must enter: "53 iodine". "Iodine" is not enough. Know the atomic numbers!
- This quiz has not been verified by Sporcle
Periodic Table: First 20 elements Quiz
- Created Mar 9, 2011 in Science
- Game Plays 399
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