The answer to that would be: An Electron Cloud Model
Electron Cloud
Electrons called valence electrons are most likely removed. These are the outermost energy level electrons.
The higher the orbital an electron has the higher its energy and the more likely it is to react.
in my cereal bowl.
Electrons can be found in regions of space around the nucleus called electron shells or energy levels. These shells are designated by the principal quantum number, with the first shell closest to the nucleus and subsequent shells further away. Within each shell, electrons occupy specific orbitals, which are specific regions where electrons are most likely to be found.
First, in order for an electron in an atom to change energy levels, there must be a place for it in the new energy levels. Quantum Mechanics puts very strict rules on how many electrons can be in the same energy level. Assuming there is a place for it, then it is very likely to move into a lower energy level. It is not possible for it to move into a higher energy level unless something from the outside comes in and knocks it up. There is no way to predict when an electron will drop down into a lower energy level. When something like a photon comes in from the outside and knocks the electron into a higher level, it usually drops back down pretty quickly, but not necessarily.
energy levels
The region where electrons most likely lie are called energy levels, or shells.
sub levels
Close to the nucleus. At that position, they have less potential energy. It is as if an object is lower in a gravitational field (closer to Earth); therefore, these energy levels are also called "lower energy levels", by analogy.
It's in the outermost shell of the electron.
Electrons called valence electrons are most likely removed. These are the outermost energy level electrons.
The higher the orbital an electron has the higher its energy and the more likely it is to react.
an atom's outer energy level doesn't have the maximum number of electrons.
in my cereal bowl.
Electrons can be found in regions of space around the nucleus called electron shells or energy levels. These shells are designated by the principal quantum number, with the first shell closest to the nucleus and subsequent shells further away. Within each shell, electrons occupy specific orbitals, which are specific regions where electrons are most likely to be found.
an atom's outer energy level doesn't have the maximum number of electrons
an atom's outer energy level doesn't have the maximum number of electrons