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Q.

Which has the highest ionization energy for the removal of the second electron?

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a

F

b

Ne

c

Na

d

Mg

answer is C.

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Detailed Solution

Sodium(Na) has the highest ionization energy for the removal of the second electron.

Compared to chlorine, sodium has an electron affinity that is 1.5 times more than that of sodium. 

As a result, removing an electron from a neutral sodium atom requires more energy than picking up an electron from a neutral chlorine atom.

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