Define Ionization energy. ?

1 Answer
Kalit Gautam
Apr 23, 2018

Energy required to ionize 1 mol of gaseous atoms.

Explanation:

Ionization energy is the energy required to remove the outermost electrons from 1 mol atoms in gaseous state.

Alkali metals have the least Ionization energy and Noble gases have the highest.

#E(g) # #rarr# #E^+(g)# #+# #e^-# : #DeltaH = #Ionization energy

Here #E# is any element.

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