Which has more ionisation energy Nitrogen or Oxygen​

Ionization energy can be thought of as the energy required to remove an electron from the valence shell of an atom. Therefore, the ionization of nitrogen will be higher than that of oxygen.

Explanation:

it is a good conductor

explanation:

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.