Page 1 of 1

energy in shells closer to the nucleus

Posted: Fri Oct 19, 2018 3:00 pm
by Tatiana 4B
Why are electrons closer to the nucleus lower in energy?

Re: energy in shells closer to the nucleus

Posted: Fri Oct 19, 2018 3:36 pm
by Shundeen Martinez 1D
Since the electrons are closer to the nucleus, they are closer to a positive charge which then makes the energy level of the electron lower.

Re: energy in shells closer to the nucleus

Posted: Fri Oct 19, 2018 3:37 pm
by ThomasLai1D
I think of it this way: An negatively charged electron farther from the nucleus must be of higher energy in order to resist the pull of the positively charged nucleus. Therefore, an electron closer to the nucleus is of lower energy.

Re: energy in shells closer to the nucleus

Posted: Fri Oct 19, 2018 3:46 pm
by Kayla Vo 1B
Another way to think of it is that a greater amount of energy is required to free an electron from the inner shell rather than an electron from the outer shell. Because of this, electrons in the outer shell have a higher (potential) energy compared to those in the inner shell.

Re: energy in shells closer to the nucleus

Posted: Fri Oct 19, 2018 3:54 pm
by Linyu Zeng 1H
I don't know if this is correct, but I explain it to myself in this way: The closer an electron is to the nucleus, the greater energy it needs to resist the positive charge of the nucleus. Because the energy of an electron is negative (-), so the greater the "absolute value" of its energy, the lower its energy is.