PLEASE I NEED THIS NOW ITS EASY I JUST DIDNT STUDY

Which transition by an electron will release the greatest amount of energy? oa ob oc od

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island