Periodic Classification And Periodic Properties Ques 1
1. The element with $Z=120$ (not yet discovered) will be an/a
(2019 Main, 12 Jan I)
(a) transition metal
(c) alkaline earth metal
(b) inner transition metal
(d) alkali metal
Show Answer
Answer:
Correct Answer: 1.(c)
Solution:
The element with $Z=120$ will be an alkaline earth metal. Recently, oganesson $(\mathrm{Og})$ with atomic number 118 is named by IUPAC is a noble gas and placed just two places before 120 . So, the general electronic configuration is represented as [noble gas]ns ${ }^{2}$ and element with $Z=120$ exists as an alkaline earth metal.
BETA
