Answer:
Option (B)
Step-by-step explanation:
In the periodic table, Potassium belongs to the very first column. It is comprised of 19 number of electrons as well as protons and 20 number of neutrons, forming an atomic number of 19. As there occurs only 1 electrons in its outermost shell so, it can easily give out and have a valency of 1. It is denoted by the letter 'K'.
This potassium is present in both the bodies of plants and animals as minerals. Some of the industrial use of potassium are in making soaps and detergents, hair colors and dyes, and also used in the batteries.
Thus, the correct answer is option (B).