An electron shifts from a lower energy to a higher energy
Just divide 675 by the atomic number of cesium and you will end up with
5.078798426627975
Answer:
he distance to a star can be found by comparing its luminosity to its apparent brightness.
Explanation: A star that is far away will be very dim compared to its luminosity. So it proves that the ratio of its luminosity to apparent brightness will be greater than for a nearby star.
