Chemical Element #87: Francium (Fr)
Atomic Number: 87, Element Symbol: Fr, Element Name: Francium, Atomic Mass: 223.01973 u.
Detailed Properties:
| Atomic Number: | 87 |
| Element Symbol: | Fr |
| Element Name: | Francium |
| Electron Configuration: | [Rn]7s1 |
| Atomic Mass: | 223.019730 u |
| Melting Point: | 300.00 K |
| Boiling Point: | Unknown |
Stable Isotopes:
| Isotope | Mass | Abundance |
| 223Fr | 223.019736 | Unknown |
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2022-05-15, 151👍, 0💬
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Chemical Element #89: Actinium (Ac)
Atomic Number: 89, Element Symbol: Ac, Element Name: Actinium, Atomic Mass: 227.02775 u. 2022-07-06, 170👍, 1💬
Chemical Element #88: Radium (Ra)
Atomic Number: 88, Element Symbol: Ra, Element Name: Radium, Atomic Mass: 226.02541 u. 2022-07-06, 157👍, 1💬
Chemical Element #87: Francium (Fr)
Atomic Number: 87, Element Symbol: Fr, Element Name: Francium, Atomic Mass: 223.01973 u. 2022-05-15, 152👍, 0💬
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Atomic Number: 90, Element Symbol: Th, Element Name: Thorium, Atomic Mass: 232.038 u. 2022-05-05, 146👍, 0💬
Chemical Element #92: Uranium (U)
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Chemical Element #91: Protactinium (Pa)
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