Build Atoms & Ions — Test
Place the electrons yourself. Nothing is shown until you press Check.
? How to use
Guided
Test
1. Element
2. Target
Neutral atom
Common ion (suggested)
Custom ion…
Charge
3. Clicking a ring will…
+ Add
− Remove
4. Check
Check
Clear
Random
How to use
Choose an
element
and a
target
(atom or ion).
Click any ring to add an electron. Use
Remove
mode (or hold
Shift
) to take one away.
Press
Check
to see whether you are right.
Key
Nucleus (protons + neutrons)
Electron (e⁻)
Got it