Question

The formula of the binary compound formed by the element with atomic number $120$ and sulphur is:

• A. $X_{3}S$
• B. $X_{2}S$
• C. $X{S}_2$
• D. $XS$

Answer 1

Answer: (D)

The electronic configuration of the element $X$ with atomic number $120$ is $[Uuo]8s^2$. Thus, it belongs to second group and its valency is $2$ .