Q.
The element with atomic number 117 has not been discovered yet. In which family would you place this element if discovered?
1714
211
KEAMKEAM 2009Classification of Elements and Periodicity in Properties
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Solution:
The electronic configuration of the element with atomic number 117 is
= [ Rn]865f14,6d10,7s2,7p5
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.