**Francium Specifications:**
1. **Chemical Element:**
- Symbol: Fr
- Atomic Number: 87
- Atomic Mass: Approximately 223 u
2. **Physical Properties:**
- State at Room Temperature: Radioactive metal
- Melting Point: Approximately 27°C (Estimated)
- Boiling Point: Approximately 677°C (Estimated)
3. **Radioactive Nature:**
- Highly radioactive and unstable.
- Exhibits rapid decay, primarily through alpha decay.
4. **Occurrence:**
- Extremely rare in nature.
- Mainly produced synthetically in laboratories.
5. **Isotopes:**
- Francium has no stable isotopes.
- The most stable isotope is Francium-223.
6. **Chemical Properties:**
- Alkali metal in Group 1 of the periodic table.
- Reacts violently with water, similar to other alkali metals.
- Exhibits typical properties of alkali metals.
7. **Applications:**
- Limited practical applications due to its scarcity and high radioactivity.
- Primarily used for scientific research, particularly in nuclear physics.
8. **Health and Safety:**
- Handling of francium requires extreme caution due to its radioactivity.
- Strict safety measures must be in place for any experimentation involving francium.
9. **History:**
- Discovered in 1939 by Marguerite Perey.
- Named after France in recognition of Perey's home country.
10. **Future Prospects:**
- Ongoing research for potential applications in advanced nuclear physics and medicine.
- Limited commercial use due to challenges associated with its production and handling.
Note: The information provided is based on the knowledge available up to January 2022.
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