Potassium
The first element in the fourth period of the Periodic Table is potassium (K).
The first element in the fourth period of the periodic table is potassium (K).
It is potassium.
potassium
The A is Potassium
The first element in the fourth period, which is used in making fertilizer, is potassium.
Potassium
potassium :D
Potassium is the element that used to be first to make fertilizer.
Period four elements fill 4s shells then 3d then 4p. The first element in this particular period is potassium.
Bromine. :)
The element in the fourth period is an exception to the Aufbau principle is Cr. Each period in the periodic table corresponds to a principal energy level.