Answer:
Group 12, element is mercury
Step-by-step explanation:
Elements of group 12 are Zn, Cd and Hg.
Valence shell electronic configuration of group 12 elements is:
![(n-1)d^(10)ns^2](https://img.qammunity.org/2020/formulas/chemistry/middle-school/39hfzqrirru5pyzm73ip1ix48x45jx5gon.png)
Elements of group 12 elements generally exist in +2 oxidation states in their compounds.
However, Hg also form series of compounds in which oxidation state of Hg is +1.
For example,
![Hg_2Cl_2\ and\ HgCl_2](https://img.qammunity.org/2020/formulas/chemistry/middle-school/k8kfnm1r8ed3jh1tmkcrevzfhrag0d538c.png)
Mercury is a shiny silver colured.
When mercury reacts with sulfur, a odorless red colored ppt is formed.
So among given option, group 12 is the correct answer and element is mercury.