This solution contains ions with opposite (e) Kelvin (K) is (1) In the ground state, phosphorus-31 has valence orbitals, 16 and three electrons. (g) The energy of the highest level in the H atom is (h) Arrange the following subshells in a polyelectronic atom in order of increasing energy: 3s 4d 2p 4f 3d 2s 3p 4s () When we write ground-state electron configurations of atoms, what are the principles and rules that we should consider? (i) Orbitals can be or full; when they are full they have two electrons with opposite (k) (i) What do we mean by the internal energy of a system? (A system loses 850 J of heat and its yolume decreases from 2.75 L to 1.27 L at an external