The element potassium has an atomic number 19 and a mass number is 39. Give the number of electrons, protons, and neutrons in it. Give the electronic configuration in different energy shells. Mention its valency.
Given:
Atomic number of Potassium
Mass number of Potassium
Formula:
Calculate the number of electrons in Potassium atom :
Number of electronsAtomic number
Thus,
Thus, the number of electrons in Potassium is .
Calculate the number of protons in Potassium atom :
Number of protonsAtomic number
Thus,
Thus, the number of protons in Potassium is .
Calculate the number of neutrons in Potassium atom :
Mass numberNumber of protonsNumber of neutrons
Number of neutronsMass numberNumber of protons
Number of neutrons
Thus, the number of neutrons in Potassium is .
Electronic configuration of Potassium atom :
Thus, the electronic configuration of Potassium atom is .