Which ionization process requires the most energy

The K_w for water at 0°C is 0.12×10⁻¹⁴. Calculate the pH of a neutral aqueous solution at 0°C.

The successive ionization energies for an unknown element are:

IE₁ = 896 kJ/molIE₂ = 1752 kJ/molIE₃ = 14,807 kJ/molIE₄ = 17,948 kJ/mol

To which family in the periodic table does the unknown element most likely belong?

For each element, predict where the "jump" occurs for successive ionization energies. (For example, does the jump occur between the first and second ionization energies, the second and third, the third and fourth, and so on?) a. B b. Na C. P d. S