Science quiz
Elements with one letter symbols
14 of the 118 elements have a symbol that is just one capital letter. Type the elements in any order; the symbol shows when a row fills.
- Format
- Type them all
- Items
- 14 answers
- Limit
- 2:30
- Level
- Medium
- Checked
- 2026.10.03
- Answers
- 14
- Time limit
- 2:30
- Order
- Any order
- Matching
- Case and accents ignored
- Type an answer; it files itself the moment it matches.
- One answer can fill several slots.
- Give up at any time to see what you missed.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Name the elements whose symbol is a single letter.
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About this quiz
A one letter symbol usually went to the element that was named first. Later elements with the same initial took a second letter, which is why carbon is C but calcium is Ca.
- Two of the letters do not match the English name: K is potassium and W is tungsten.
- No element has the symbol A, D, E, G, J, L, M, Q, R, T, X or Z.
- Yttrium, Y, is named after the Swedish village of Ytterby.
Sources
- [1]PubChem, National Institutes of Health. Periodic Table of Elements.
Last checked October 3, 2026
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