Home▸Chemistry & Materials▸Aluminium Atom: Bohr Shells, Slater Z-eff & Ionisation (2D)

Aluminium Atom: Bohr Shells, Slater Z-eff & Ionisation (2D)

2D Bohr/Slater shell model of aluminium (Z=13): real aufbau electron configuration, Slater-shielded effective nuclear charge, shell radii, and the real ionisation-energy jump that explains the stable Al3+ ion.

Chemistry & Materials2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

This 2D companion replaces the 3D orbiting-dots view with a real Bohr/Slater shell model: the aufbau electron configuration (1s² 2s² 2p⁶ 3s² 3p¹) drives shell occupations K=2, L=8, M=3, each shell's effective nuclear charge is computed from Slater's shielding rules and recalculated live as you strip electrons off to form Al⁺, Al²⁺ and Al³⁺, and the resulting shell radius (r_n = a₀n²/Z_eff) visibly shrinks with each ionisation step while the real successive ionisation energies (577.5 → 1816.7 → 2744.8 → 11577 kJ/mol) explain why the atom stops at +3.

⚙ Under the hood

2D Bohr/Slater shell model driving the aufbau electron configuration, Slater-shielded effective nuclear charge per shell, r_n = a0·n²/Z_eff shell radii, and real successive ionisation energies for aluminium.

aluminium atombohr modelslater shieldingeffective nuclear chargeionisation energyelectron configuration

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install