The ionization enthalpy of second period elements vary with atomic number as The elements present at points B and E are

Question

The ionization enthalpy of second period elements vary with atomic number as The elements present at points B and E are (A) Be, C (B) B, N (C) Be, O (D) Be, N

Tardigrade Admin · Accepted Answer

The electronic configuration of Be = 1s2, 2s2 (Fully filled). The electronic configuration of N = 1s2, 2s2, 2p3 (Half filled). Due to stable electronic configuration of Be and N the IE of these elements is more than elements of the next group.

Q. The ionization enthalpy of second period elements vary with atomic number as
The elements present at points B and E are

Be, C

B, N

Be, O

Be, N

The electronic configuration of Be = $1 s^{2}, 2 s^{2}$ (Fully filled). The electronic configuration of N = $1 s^{2}, 2 s^{2}, 2 p^{3}$ (Half filled). Due to stable electronic configuration of Be and N the IE of these elements is more than elements of the next group.

Q. The ionization enthalpy of second period elements vary with atomic number as The elements present at points B and E are