Write the ions that result from the dissociation of na2s

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Give the orbital configuration of the phosphorus (p) atom.

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?