Question

The element with atomic number 117 has not been discovered yet. In which family would you place this element if discovered?

• A. Alkali metals
• B. Alkaline earth metals
• C. Halogens
• D. Noble gases

Answer 1

Answer: (C)

Halogens

Answer 2

The electronic configuration of the element with atomic number 117 is
= [ $R_n ]_{ 86 } 5 \, f^{ 14 }, \, 6d^{ 10 }, \, 7s^2, \, 7p^5$
This element contains 7 electrons in its outermost shell, so it belongs to VIIA (17) group of Periodic Table, i.e., it is a halogen. Its IUPAC symbol is Uus.