If an electron in the n=9 energy level of a hydrogen atom relaxes down to the n=5 energy level, determine the energy of the photon (in kJ) released in the process.

500bc indiais the answer.

Atp, shorthand for adenosine triphosphate, is the standard molecule for cellular enger in the human body. all motion and metabolic  processes  within the body begins with energy that is released from  atp, as its phosphate bonds are broken in cells through a  process  called hydrolysis.

Iwould but i dont know the answer