Electron Configuration Visualizer for Every Element

You're doing a chemistry assignment and the question asks for the electron configuration of titanium. You remember the aufbau principle — electrons fill the lowest energy orbitals first — but you can never quite remember whether 3d comes before or after 4s. And then there's the noble gas shorthand, which requires you to remember which noble gas comes right before titanium.

Pick an element, see everything

The electron configuration visualizer shows you the full periodic table. Click titanium and you immediately see the full configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d². Below that, the noble gas shorthand: [Ar] 4s² 3d². And below that, an orbital filling diagram showing boxes with arrows — up and down arrows for each electron, organized by subshell.

The orbital diagram is especially useful for understanding why transition metals behave the way they do. You can literally see that titanium has two unpaired electrons in the 3d orbitals, which explains its paramagnetic properties. For chromium and copper, you can see the well-known exceptions where an electron shifts to achieve a half-filled or fully-filled d subshell.

When this matters

If you're studying periodic trends, clicking through elements in sequence makes patterns visible. Go from sodium to argon and watch the 3p subshell fill up one electron at a time. Go down a group and see how the noble gas core grows while the valence configuration stays the same pattern.

It's also a lifesaver during exams when you need to write configurations quickly and want to verify your understanding of the filling order. The electron configuration tool isn't doing magic — it follows the same aufbau principle, Hund's rule, and Pauli exclusion you learn in class — but having the visual representation makes the abstract rules concrete.

If you want to explore other properties of the element you selected, the periodic table shows mass, density, melting point, and more.