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What is ionization number and ionization energy?

Answer 1

Well, #"ionization energy"# is the ..............

Well, #"ionization energy"# is the energy required for the formation of one mole of cations and one mole of electrons from one mole of starting element:

#M(g)+Delta_"ionization energy"rarrM^(+)(g) + e^(-)#

It is specified that both reactants and products must be in the gas phase.

#"Ionization number"# is a bit more old-fashioned, and you must be looking in an old text, and it is the number of valence electrons that the element possesses, OR the number of electrons that the element must gain to reach a Noble Gas configuration. Usually this follows the #"Group number"#; certainly this is true for metals, but for #"Groups 15, 16, 17"# usually ionization numbers of #-3,-2, and -1# would be commonly reported.

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Answer 2

Serenity Allen

Ionization number refers to the number of electrons lost or gained by an atom to form an ion. Ionization energy, on the other hand, is the energy required to remove an electron from an atom or ion in its gaseous state.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.