Pls can someone pls explain ionization energy

Ionization energy is the energy required to remove an electron from a gaseous atom or ion. The first or initial ionization energy or Ei of an atom or molecule is the energy required to remove one mole of electrons from one mole of isolated gaseous atoms or ions.

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air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest