Why is Second Ionization Energy higher?

Why is Second Ionization Energy higher?

Ionization energy refers to the amount of energy needed for a number of electrons to be removed from a single atom. Measured using the unit called the electronVolt and is symbolized by eV, ionization energy can be associated in the fields of chemistry, physics and the like. Although it is used in various types of field, the concept remains to be the same. The energy required to remove certain particle, molecule or electron is referred to as ionization energy. It is always the case that large atoms only require low levels of ionization energy while small atoms rend to require higher levels of ionization energy. Ionization energy measures the reluctance or the resistance of certain atom to let go of its contained electrons. Greater levels of ionization energy make it difficult for electrons to detach from the atom that holds on it. This simply implies that ionization energy determines the rate at which elements tends to react. This therefore, is one important indicator of the element’s reactivity potential.
In the general concept of ionization, which is the nth ionization energy required to strip off the nth electron after the first n − 1 electrons have been removed, the n+1 is always greater compared to the original ionization energy perceived by each atom. It always applies that the next level of ionization energy, which tends to be higher, removes electron at a distance that is evidently closer to the nucleus, as it is considered to be at the center of the atomic orbital circle. As electrons are removed closer from the nucleus, the greater energy is required for such electrons to be detached and be completely removed.
Ionization energy trends can also be observed in the arrangement of elements in the periodic table of elements.

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