For the second period elements, the correct increasing order of first ionization enthalpy is
Li < Be < B < C < N < O < F < Ne
Li < B < Be < C < O < N < F < Ne
Li < B < Be < C < N < O < F < Ne
Li < Be < B < C < O < N < F < Ne
2 Option
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Stability order of the orbitals with electrons
Fully Filled > Half Filled > Partially Filled
Li < Be < B < C < N < O < F < Ne
Option 2)Li < B < Be < C < O < N < F < Ne
Option 3)Li < B < Be < C < N < O < F < Ne
Option 4)Li < Be < B < C < O < N < F < Ne