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Protons
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1
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Neutrons
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0
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Electrons
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1
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H
Hydrogen
Atomic #1 • Mass: 1
🔬 Isotopes
✓ Stable Isotope
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🎯 Build Helium
Create a neutral helium atom (2 protons, 2 electrons)
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📊 Properties
Electronegativity
2.20
Atomic Radius
53 pm
Ionization E.
1312 kJ/mol
Electron Affinity
73 kJ/mol
🔮 Electron Configuration
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