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Interactive Atom Builder

Construct atoms and ions for the first 20 elements — complete challenges to test your knowledge

Current Challenge

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Target Achieved!

Protons (p⁺) 1

Neutrons (n⁰) 0

Electrons (e⁻) 1

H - Hydrogen

Neutral Atom Common Isotope
Atomic Number (Z)1
Mass Number (A)1
Net Charge0
Electronic Structure1