What element is in the second period in Group 4A?

Silicon (Si)

To find out which element is in the second period of Group 4A, we will need to refer to the periodic table.

1. Start by locating the Group 4A. This group is also known as Group 14 or the Carbon Group.
2. Determine the period you are looking for. In this case, it is the second period.
3. Scan the second period of Group 4A on the periodic table.

By following these steps, we find that the element in the second period of Group 4A is Silicon (Si).