[填空题]
1. 1.State the fu,sy8sgh r4x) 8fcxs .wll electron configbhg238 wqpl k8urations of an N atom and O atom.N: $s^2$ $s^2$ $p^3$ O: $s^2$ $s^2$ $p^4$
2.Draw the orbital diagrams for an N atom and O atom.
2.Compare and explain the difference between the first ionization energy of oxygen and nitrogen.