Electrons are attracted to the nucleus of the atom of which they are a part; this is because of the electrostatic force between the negatively charged electron and the positively charged nucleus. Therefore it takes energy in order to pull an electron farther away from the nucleus and to enable it to remain at a greater distance. This is exactly the same phenomenon as raising a heavy object such as, let us say, a Bowling ball, to a greater elevation. It takes energy to do it, since you have to overcome the force of gravity.
When electrons either absorb or release energy they do it by means of photons, which can be thought of as little packets of electromagnetic energy. If a photon strikes an electron, the electron will absorb it, and will gain energy (which might cause it to leave the atom, or to assume a higher orbit). If an electron releases energy, the energy appears in the form of a photon which is emitted by the electron (and the electron will fall to a lower orbit).
An electron would need to absorb energy in order to go to a higher energy level, just like it would require energy for you to climb from the second floor to the third floor of a building. Conversely, that electron would release the same energy going back from three to two.
It has to absorb energy so as to get excited from second to third energy level.
Released.
Think. It's moving from a higher energy level to a lower energy level, so energy is released.
This electron absorb energy.
Yes
The energy to remove 1 electron is the first ionization energy. To remove a second electron requires more energy. This is because the electron being removed now has to overcome the +1 positive charge introduced after the 1st electron was removed.
Lithium
An electron in the third shell has more energy than the electron in the second shell.
First ionization energy is the energy required to remove the first outermost electron from an atom. The second ionization energy is the energy required to remove the next available electron, and is greater than the first IE. The third IE is that energy needed to remove the third electron, and is greater the the second IE.
This is a cation.
It would release energy. It had to absorb it in order to get from 2 to 3. Law of conservation of energy says it must now release it to fall back.
More the gap, more the energySo the electron falling from Third shell will release more energy.
If an electron is in the second principle energy level, that is, n = 2, then that electron could be in an s or p orbital.
The energy to remove 1 electron is the first ionization energy. To remove a second electron requires more energy. This is because the electron being removed now has to overcome the +1 positive charge introduced after the 1st electron was removed.
greater
First ionization energy is the energy required to remove the first outermost electron from an atom. The second ionization energy is the energy required to remove the next available electron, and is greater than the first IE. The third IE is that energy needed to remove the third electron, and is greater the the second IE.
Lithium
The second level is associated with higher energy than the first is. Keep increasing the energy of an electron enough, and eventually it breaks free of the atom completely.
To create an electron affinity reactor you will have to use the second ionization energy.
An electron in the third shell has more energy than the electron in the second shell.
First ionization energy is the energy required to remove the first outermost electron from an atom. The second ionization energy is the energy required to remove the next available electron, and is greater than the first IE. The third IE is that energy needed to remove the third electron, and is greater the the second IE.
Photosystem's electron travel through the electron transport chain(etc) where ATP is produced and then back to the photosystem. In non-cyclic photophosphorylation, Photosystem II electron then is absorbed by photosystem I, photosystem I electron used to form NADPH and photosystem II gets its electron from photolysis of water. For you unfortunate children using Novanet: They move through an electron transport chain to photosystem 1.