It is iron.
The element is krypton (Kr)
Iron is found in period 4 group 8.It is a transition metal with atomic number of 26.
Gallium (Ga)
iron
The electron configuration 1s22s22p63s23p64s23d7 corresponds to the element Manganese (Mn), which is in Group 7 (previously known as "VIIIB" or "8") and Period 4 of the periodic table.
Helium is the element that is placed in period 1 and group 18 of the periodic table. It is inert in nature and hence stable.
Third period has 8 elements. They have 3 electron shells.
Period 4, Group 14 (= IV-A)Germanium, 32Ge, [Ar] 3d10 4s2 4p2 KLMN: (2, 8, 18, 4)Period 4, Group 4 (= IV) Titanium, 22Ti, [Ar] 3d2 4s2 KLMN: (2, 8, 10, 2)
Period 4 Group 8
Iron is in the d block. It is in the 4th period. The group of it is 8.
If your question is referring to chemical symbols, the symbol Fe refers to the element iron. In the Periodic Table, it can be found in Group 8 and period 4.
Iron (Fe) is Group 8, Period 4