Answer:
Cadmium, Zinc, and Mercury are the three transition elements from the periodic table in group 12.
Option: B
Step-by-step explanation:
Periodic table consists of all chemical elements in a tabular form which are arranged according to electronic configuration, atomic number and chemical properties. Every chemical elements are divided into groups have same chemical behaviours.
Both non-metals and metals are included in periodic table which are again divided into different group of elements. From those transition elements are the elements have half-filled f or d subshell.
These transition elements consists of groups from 3 to 12. In group 12 Mercury, Zinc, and Cadmium are the transition elements.