Chemistry - PERIODIC TABLE Question with Solution | TestHub

The second ionization potential means removal of electron from cation ${\mathrm{C}}^{+}=1s^{2}2s^{2}2p^1,{\mathrm{N}}^{+}=1s^{2}2s^{2}2p^2$ ${\mathrm{O}}^{+}=1s^{2}2s^{2}2p^3,{\mathrm{F}}^{+}=1s^{2}2s^{2}2p^4$ Therefore $\mathrm{O}>\mathrm{F}>\mathrm{N}>\mathrm{C}$