Problem: Which of the following elements has the largest second ionization energy (IE2)?A. LiB. BC. OD. FE. Na

FREE Expert Solution

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

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

 Second I.E. refers to removing a second electron

 Third I.E. refers to removing the third electron


First ionization energy → removing the first valence electron

Li → 1s22s1
B → 1s22s22p1
O → 1s22s22p4
F → 1s22s22p5
Na → 1s22s22p63s1      


Second ionization energy → removing the second electron from X+ ion

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Problem Details

Which of the following elements has the largest second ionization energy (IE2)?

A. Li

B. B

C. O

D. F

E. Na

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