Hydrogen (H) — its atomic orbitalsHydrogen is element 1: period 1, group 1, non-metal of the s block. Its ground-state configuration is 1s¹, so its outermost occupied shell is n = 1 and holds 1 electron.Each orbital below is the hydrogen-like solution at the effective nuclear charge Slater's rules give its subshell, so its angular nodes fall where the wavefunction changes sign rather than where a drawing puts them. Slater screening gives the effective charge; the energy is the hydrogen-like −13.606 Z_eff²/n², and ⟨r⟩ the mean radius of one orbital of the subshell.

Subshell

Electrons

Z_eff

Energy (eV)

Radial nodes

Angular nodes

⟨r⟩ (Å)

1.00

-13.61

0.794

Atomic orbitals, hybridisation and molecular orbitals, computed and drawn in your browser. The tool needs JavaScript and WebGL2; these are the pages it offers: