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Interactive Atom Builder Elements 1-36
Construct atoms, ions, and isotopes to visualise electron configurations, subshell orbitals, and nuclear stability.
Target Challenge
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Subatomic Particles
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Protons (p⁺)
1
Neutrons (n⁰)
0
Electrons (e⁻)
1
p⁺ Proton
n⁰ Neutron
e⁻ Electron
Aufbau Subshell Energy Diagram
1s¹
1
1
H
Neutral Atom
Common Isotope
Stable Nucleus
Atomic Number (Z)1
Mass Number (A)1
Net Charge0
Bohr Shells
[ 1 ]
Noble Gas Core
1s¹
Physical & Chemical Properties
Group / Period
Group 1, Period 1
Atomic Radius
53 pm
Electronegativity
2.20
Common Compounds
H₂O, CH₄, NH₃