element K, or potassium
On the periodic table group 4A is carbon, silicon, germanium, tin and lead. (aka "The Carbon Group")
Chromium is the element in period 4 and group 6.
The element in the same group as lithium (Group 1) and the same period as iron (Period 4) is potassium.
The element in period 4 group 2A is calcium (Ca).
Br (Bromine) is a period 4 element in the same group as F.
The element in group 4 period 5 is Zirconium (Zr).
Germanium belongs to group IVA or group 14 and period 4
calcium
The element is krypton (Kr)
The element in period 4, group 7 of the periodic table is Manganese (Mn).
The element in Period 4 and Group 2 is Calcium, which has the chemical symbol Ca.
Element Name: Arsenic. Chemical Symbol: As.