3QUESTION 3 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
923
letters
How to estimate it
Fermi’s official “Napkin math”
Picture the periodic table. It's a lot of squares, maybe 15 wide and 10 tall, with some gaps. Call it 120. How long is a typical name? Think hydrogen, titanium, chlorine. Lots of them land around 8 letters.
- Squares on the table
- ≈ 120
- Letters in a typical name
- × 8
- 120 × 8
- ≈ 960
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Elements with approved IUPAC names
- 118
- Average letters per name (tin 3, rutherfordium 13)
- ≈ 7.8
- Total, IUPAC spellings (aluminium, caesium, sulfur)
- = 923
Reference cited by Fermi: IUPAC element names (aluminium, caesium, sulfur spellings), letters counted across all 118
How close was your guess?
Your comparison will appear here.
Compare by ratio: divide the larger number by the smaller one. The closer to 1×, the better.