Hydrogen vs Indium
Side-by-side comparison of Hydrogen (H, element 1) and Indium (In, element 49) by atomic structure and physical properties.
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| Atomic number | 1 | 49 |
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| Symbol | H | In |
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| Name | Hydrogen | Indium |
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| Category | nonmetal | post-transition-metal |
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| Standard Atomic Weight | 1.007975 u | 114.818 u |
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| Period | 1 | 5 |
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| Group | 1 | 13 |
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| Block | s | p |
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| Phase at STP | Gas | Solid |
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| Electron configuration | 1s1 | [Kr]5s24d105p1 |
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| Oxidation states | [-1, 1] | [-5, -2, -1, 0, 1, 2, 3] |
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| Electronegativity (Pauling) | 2.2 | 1.78 |
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| Electron affinity | 0.75419 eV | 0.3 eV |
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| Density | 0.08988 kg/m³ | 7310 kg/m³ |
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| Melting point | -259.193 °C | 156.6 °C |
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| Boiling point | -252.781 °C | 2071.85 °C |
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| Discovery year | 1766 | 1863 |
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Key Differences
| H Hydrogen | In Indium |
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| Standard Atomic Weight | 1.007975 u ↓ lower | 114.818 u ↑ higher |
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| Density | 0.08988 kg/m³ ↓ lower | 7310 kg/m³ ↑ higher |
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| Melting point | -259.193 °C ↓ lower | 156.6 °C ↑ higher |
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| Boiling point | -252.781 °C ↓ lower | 2071.85 °C ↑ higher |
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| Electronegativity (Pauling) | 2.2 ↑ higher | 1.78 ↓ lower |
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| Electron affinity | 0.75419 eV ↑ higher | 0.3 eV ↓ lower |
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| Period | 1 | 5 |
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| Group | 1 | 13 |
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| Block | s | p |
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| Category | nonmetal | post-transition-metal |
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| Phase at STP | Gas | Solid |
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| Electron configuration | 1s1 | [Kr]5s24d105p1 |
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| Discovery year | 1766 | 1863 |
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