What is Quantum Number? These are those numbers which give the complete address (information) of an electron in any atom. These are also called as index numbers because these indexify the whereabout of electrons. These numbers describe the position, angle and shape, orientation and spin of an electron in any atom. Types of Quantum Number: Principal Quantum Number or Energy Level Quantum Number or Main Quantum Number: This quantum number was given by ‘Bohr‘ and it is represented by ‘n‘. It gives us the following information- It tells us about shells (orbits). It tells us about position of electron in … Continue reading Quantum Number and its Types