Hydrogen vs Neon
Side-by-side comparison of Hydrogen (H, element 1) and Neon (Ne, element 10) by atomic structure and physical properties.
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| Atomic number | 1 | 10 |
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| Symbol | H | Ne |
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| Name | Hydrogen | Neon |
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| Category | nonmetal | noble-gas |
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| Standard Atomic Weight | 1.007975 u | 20.1797 u |
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| Period | 1 | 2 |
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| Group | 1 | 18 |
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| Block | s | p |
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| Phase at STP | Gas | Gas |
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| Electron configuration | 1s1 | [He]2s22p6 |
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| Oxidation states | [-1, 1] | [0] |
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| Electronegativity (Pauling) | 2.2 | N/A |
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| Electron affinity | 0.75419 eV | -1.2 eV |
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| Density | 0.08988 kg/m³ | 0.8999 kg/m³ |
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| Melting point | -259.193 °C | -248.59 °C |
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| Boiling point | -252.781 °C | -246.05 °C |
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| Discovery year | 1766 | 1898 |
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Key Differences
| H Hydrogen | Ne Neon |
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| Standard Atomic Weight | 1.007975 u ↓ lower | 20.1797 u ↑ higher |
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| Density | 0.08988 kg/m³ ↓ lower | 0.8999 kg/m³ ↑ higher |
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| Melting point | -259.193 °C ↓ lower | -248.59 °C ↑ higher |
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| Boiling point | -252.781 °C ↓ lower | -246.05 °C ↑ higher |
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| Electron affinity | 0.75419 eV ↑ higher | -1.2 eV ↓ lower |
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| Period | 1 | 2 |
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| Group | 1 | 18 |
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| Block | s | p |
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| Category | nonmetal | noble-gas |
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| Electron configuration | 1s1 | [He]2s22p6 |
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| Discovery year | 1766 | 1898 |
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