HEL FAS Choose two elements: Choose the elements with the largest atomic
radius and the smallest atomic radius:
1.Largest (K) and smallest (Br)
2.Largest (Cu) and smallest (Ni)
3.Largest( Ni) smallest (Br)

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?