For each of the following elements, predict where the "jump" occurs for successive ionization energies (ie).

Which of the following represents the third ionization of Mn?

Of the following atoms, which has the largest third ionization 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/mol IE₂ = 1752 kJ/mol IE₃ = 14,807 kJ/mol IE₄ = 17,948 kJ/mol

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