Respuesta :
Answer:
the energy required to remove one electron from each atom in one mole of gaseous atoms of an element to form one mole of gaseous 1+ ions.
e.g. Na(g) --------> Na^+(g) + e^-
first ionization energy = +496 KJmol^-1
Answer:
The necessary energy that we must contribute to a neutral atom in the gas phase to release an electron. The plucked electron will be the outermost and will require less energy since it is far from the nucleus.
Explanation:
The ionization energy increases in the periods of the periodic table and decreases in the groups. If the atom is very small, we will need a lot of energy to release the electron, while if the atom is larger the energy will be greater.