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Ionization Enthalpy

The IE1 val...

Question

The $I E_{1}$ values of Li, Be and C are 5.4 eV/atom, 9.32 eV/atom and 11.26 eV/atom. The $I E_{1}$ value of boron is :

13.6 eV/atom

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8.29 eV/atom

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14.5 eV/atom

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21.5 eV/atom

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Solution

The correct option is B 8.29 eV/atom
Variation of first I.P in second period elements is $L i < B < B e < C < O < N < F < N e$ .

Hence, option B is the correct answer.

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