Definition of eject. 1  transitive verb. 2  1a : to throw out especially by physical force, authority, or influence ejected the player from the gameb : to evict from property. 3  2 : to throw out or off from within ejects the empty cartridges.
Aluminum is reactive and will react spontaneously with water and/or air to form aluminum oxide. Aluminum oxide, Al2O3, forms a stable passive layer that protects aluminum from corrosion or further oxidation. This layer is about 4 nm thick and will provide corrosion protection as long as this oxide layer is stable.
In a neutral atom, the number of electrons is the same as the number of protons. The atomic number of aluminum is 13. A neutral atom of aluminum has 13 protons and 13 electrons. The ground state electron configuration for aluminum is #1s^22s^22p^63s^23p^1#. A shorthand way to write the electron configuration, called noble gas notation, is #[Ne]3^23p^1#.