What are the exceptions to the trend in ionization energy

The two exceptions from the general trend are the ionization energies of B lesser than Be and that of O

Explanation:

less than N. My teacher told me the reason to both was that half filled and fully filled orbitals of N and Be are more stable and hence require more energy to pull off an electron.

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante