UNUNSEPTIUM

'Ununseptium' (IPA: ) is the temporary name of an undiscovered chemical element in the periodic table that has the temporary symbol Uus and has the atomic number 117. Ununseptium can be referred to as 'eka-astatine'.

Contents

History

References

External links

History

Ununseptium has not yet been discovered. Certain chemical properties, such as bond lengths, are predicted to differ from what one would expect based on periodic trends from the lighter halogens (because of relativistic effects).^[1] Ununseptium may show semimetal properties as well.

References

1. Principles and Applications of Relativistic Molecular Calculations Trond Saue , page 76

External links

★ WebElements.com - Uus

★ Apsidium - Ununseptium

★ Theory of atomic-mass calculation