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Some predicted properties of ununseptium:
- melting point: 300-500 0C
- boiling point: 55 0C
- density: 7,2 g/cm3
- empirical atomic radius; 138 PM
- first ionization energy: 742,9 kJ/mol
- solid
- atomic number: 117
- radioactive
- unstable
The chemistry of Uus is not known.

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Flourine belongs to a class of elements called Halogens, which are similar in their chemical and physical properties. The other elements of this group are Chlorine, Bromine, Iodine, Astatine and Ununseptium. Astatine, however, is not considered to be a true halogen since it is radioactive in nature and Ununseptium is a synthetic element.


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