| Protactinium, Pa | |
|---|---|
| Categories: | MetalNonferrous MetalPure Element |
| Material Notes: | Malleable and Ductile. Properties vary with isotope. Physical Form: Shiny Metal; Tetragonal or Cubic |
| Vendors: | No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material. |
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Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 15.43 g/cc | 0.5574 lb/in³ | |||
| Chemical Properties | Metric | English | Comments | ||
| Atomic Mass | 231.0359 | 231.0359 | 231.03588 – 1995 | ||
| Atomic Number | 91 | 91 | |||
| X-ray Absorption Edge | 0.11028 Å | 0.11028 Å | K | ||
| 0.58748 Å | 0.58748 Å | LI | |||
| 0.61064 Å | 0.61064 Å | LII | |||
| 0.74138 Å | 0.74138 Å | LIII | |||
| Electronegativity | 1.5 | 1.5 | Pauling | ||
| Ionic Radius | 0.890 Å | 0.890 Å | Crystal Ionic Radius for Valence +5 | ||
| 0.980 Å | 0.980 Å | Crystal Ionic Radius for Valence +4 | |||
| 1.13 Å | 1.13 Å | Crystal Ionic Radius for Valence +3 | |||
| Mechanical Properties | Metric | English | Comments | ||
| Bulk Modulus | 157 GPa | 22800 ksi | |||
| Electrical Properties | Metric | English | Comments | ||
| Electrical Resistivity | 0.0000150 ohm-cm | 0.0000150 ohm-cm | |||
| Magnetic Susceptibility | 190 | 190 | emu/mol | ||
| Critical Superconducting Temperature | 1.40 K | 1.40 K | |||
| Thermal Properties | Metric | English | Comments | ||
| Heat of Fusion | 12.3 J/g | 5.29 BTU/lb | |||
| CTE, linear | 9.90 µm/m-°C @Temperature 30.0 – 700 °C | 5.50 µin/in-°F @Temperature 86.0 – 1290 °F | |||
| Specific Heat Capacity | 0.09912 J/g-°C | 0.02369 BTU/lb-°F | Gas | ||
| Thermal Conductivity | 47.0 W/m-K | 326 BTU-in/hr-ft²-°F | |||
| Melting Point | 1552 – 1592 °C | 2826 – 2898 °F | |||
| Heat of Formation | 0.000 kJ/mol | 0.000 kJ/mol | Crystal | ||
| 607 kJ/mol | 607 kJ/mol | Gas | |||
| Component Elements Properties | Metric | English | Comments | ||
| Protactinium, Pa | 100 % | 100 % | |||
| Descriptive Properties | |||||
| CAS Number | 7440-73-3 | ||||
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