Problem: Which of the following represents the  third ionization of Mn?Mn– (g) + e –  →  2 Mn2- (g)Mn2+ (g)  →  Mn3+ (g) + e –Mn2- + e –  →  Mn3- (g)Mn2+ (g)  →  Mn+ (g) + e –

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Ionization energy (I. E.) is the energy required to remove an electron from a gaseous atom or ion.

First I.E. corresponds to removing thfirst valence electron from a neutral atom

 Second I.E. refers to removing a second electron

 Third I.E. refers to removing the third electron

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Problem Details

Which of the following represents the  third ionization of Mn?

  1. Mn (g) + e  →  2 Mn2- (g)
  2. Mn2+ (g)  →  Mn3+ (g) + e
  3. Mn2- + e   →  Mn3- (g)
  4. Mn2+ (g)  →  Mn+ (g) + e 

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