The atomic radius and ionization energy of atoms, among other properties, is also determined by quantum numbers. Chapter 14 Environmental Chemistry. All the five d orbitals of a particular shell have the same energy and all the 7 f orbitals have same energy. Thank you. Physical Chemistry for the Biosciences. Solid State Chemistry. To picture a 2s orbital, imagine a layer similar to a cross section of a jawbreaker around the circle. Because n describes the most probable distance of the electrons from the nucleus, the larger the number n is, the farther the electron is from the nucleus, the larger the size of the orbital, and the larger the atom is. Since the electron in an orbital can spin either in clockwise direction or in the anticlockwise direction, hence for a given value of m, s can have only two values i.