Ionization Enthalpy

Ionization enthalpies are

Ionization enthalpies of transition metals are

Which of the following statement is correct regarding 3d-series of elements ? (1) Sc has the lowest while Zn has the highest first ionization enthlpy. (2) Cu has the highest while Sc has the lowest second ionization enthalpy (3) Zn has the highest third ionization enthalpy (4) Fe has lower third ionization enthalpy relative to Mn

Which of the following is correct regarding the values of ionization enthalpies?

The largest ionization enthalpies in any period occur for the