Toolbox

Small scripts converted into browser tools. This page is for useful calculators and utilities that do not need a full project page.

Electron Shell Calculator

Atomic number to shell distribution

Enter an atomic number and the tool fills orbitals using the same priority order as the original Python script, then summarizes electrons by shell.

Atomic number

Total electrons

Occupied shells

Shell 1

Capacity formula: 2n²

2/2

Shell 2

Capacity formula: 2n²

8/8

Shell 3

Capacity formula: 2n²

14/18

Shell 4

Capacity formula: 2n²

2/32

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