Answer to Question #269507 in General Chemistry for yash

Question

Which of the following order(s) is/are correct for the indicated ionization energy?

O > N > B > C (IE₂)

F > Cl > Br > I (IE₂)

N > C (IE₃)

B > Ga (IE₁)

Answer 1

Ionization energy is affected by:

-size

-effective nuclear charge and

Electron configuration

All the orders are correct apart from :

N>C in consideration of third ionization energy.

Electron configuration are:

N: $1S^2 \>2S^2\>2P^3$

$C:\>1S^2\>2S^2\>2P^2$

Third ionization energy removes electron from s-orbital of Carbon and p-orbital of Nitrogen.

Carbon has higher third ionization energy than Nitrogen.