# Element Guessing Game (Periodic Table Puzzle)

Guess the mystery chemical element in ten tries using clues for group, period, category, state, block and atomic number.

- URL: https://toolstackhub.co.uk/tools/element-guessing-game/
- Category: Browser Games
- Price: free, no sign-up
- Privacy: runs in the browser; input is not uploaded
- Last updated: 2026-10-08

## About
The Element Guessing Game hides one of the 118 chemical elements. Guess an element by name or symbol, and the game compares it with the mystery element on atomic number, atomic mass, group, period, category, block and state at room temperature. Green means a match, and arrows show whether the mystery element has a higher or lower number. You have ten guesses. It is a quick, free way to learn the structure of the periodic table.

## How to use
1. Type an element’s name or symbol and press Guess.
2. Each guess is compared with the mystery element across eight columns. Green means the same value. For atomic number and mass, an arrow shows whether the mystery element is higher or lower.
3. Use the clues about group, period, category, block and state to narrow it down. You have ten guesses.
4. Choose Unlimited for a new random element, or Daily element for the one everyone gets that day.

## FAQ
**How do you play the element guessing game?** Guess a chemical element by name or symbol. The game compares your guess with the mystery element on atomic number, mass, group, period, category, block and state, and you have ten guesses.

**What do the arrows mean?** An arrow points from your guess towards the mystery element. ⬆ means the mystery element has a higher number and ⬇ means a lower one.

**What are the groups and periods?** Groups are the columns of the periodic table (1 to 18) and periods are the rows (1 to 7).

**What is the block of an element?** The block (s, p, d or f) describes which kind of orbital holds the element’s outermost electrons and matches a region of the table.

**Where does the element data come from?** The names, symbols and atomic masses come from the open chemical-elements dataset. Group, period, category, block and state are derived from the standard layout of the periodic table.

**Is the Element Guessing Game (Periodic Table Puzzle) free?** Yes, with no sign-up or limits.