One way in which elements differ from each other is the structure of the electron cloud in each element’s atoms. In an electron
cloud, an electron that is farther away from the nucleus has ,...(A) a greater charge than an electron near the nucleus....(B) a smaller charge than an electron near the nucleus...(C) a higher energy than an electron near the nucleus....(D) a lower energy than an electron near the nucleus
Answer is: (C) a higher energy than an electron near the nucleus.
Electrons can jump from one energy level to another, absorbing or emitting electromagnetic radiation with a frequency ν (energy difference of the levels).
When electron jump from higher to lower energy level (shell), it emitting (releasing) energy.
When the electron changes from n=4 (fourth shell) to n=2 (second shell), the photons are emitted.
