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, 671👍, 0💬
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Atomic Number: 88, Element Symbol: Ra, Element Name: Radium, Atomic Mass: 226.02541 u. 2022-07-06, 871🔥, 1💬
Chemical Element #92: Uranium (U)
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Chemical Element #86: Radon (Rn)
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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, 712🔥, 1💬
Chemical Element #82: Lead (Pb)
Atomic Number: 82, Element Symbol: Pb, Element Name: Lead, Atomic Mass: 2.1e+02 u. 2022-10-07, 708🔥, 0💬
Chemical Element #83: Bismuth (Bi)
Atomic Number: 83, Element Symbol: Bi, Element Name: Bismuth, Atomic Mass: 208.9804 u. 2022-10-07, 700🔥, 0💬
Chemical Element #85: Astatine (At)
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