4. Would an electron have to absorb or release energy to jump from the second energy level to the third energy level?

Absorb energy

Explanation:

An electron absorbs energy when jumping up an energy level (so in this case 2 to 3) and then releases the energy in the form of a photon when it jumps down an energy level.

explanation:

on august 6, 1945, just days after the potsdam conference ended, the u.s. bomber enola gay dropped the uranium bomb known as “little boy” on the japanese city of hiroshima. despite its devastating effects, japan didn't offer unconditional surrender right away, as the united states had hoped.