Consider the circle elements in the periodic table. based on their location ,we could infer that most of them are

How have the greenhouse gasses increased from the year 2000 to 2018

What causes most sediment to wash or fall into a river

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?