d and f BLOCK ELEMENTS Quiz

• Its high hydration enthalpy perfectly balances the high energy costs.
• Its hydration enthalpy is the only factor considered.
• Its high hydration enthalpy makes the E° value more negative.
• Its relatively low hydration enthalpy fails to adequately compensate for the high energy costs of atomization and ionization.

• Achieving a fully filled d subshell.
• Achieving a half-filled t2g level.
• Pairing of electrons in the eg level.
• Achieving a half-filled d subshell in the d5 configuration.

• Achieving a fully filled d subshell.
• Achieving a half-filled d subshell.
• Pairing of electrons in the eg level.
• Achieving a half-filled t2g level in the d3 configuration.

• Metals with positive E° values can liberate H2, while those with negative E° values generally cannot.
• There is no relationship between E° and the ability to liberate H2.
• Only the hydration enthalpy determines the ability to liberate H2.
• Metals with negative E° values can liberate H2, while those with positive E° values generally cannot.

• Its high first ionization enthalpy.
• Its high second ionization enthalpy.
• Its low hydration enthalpy.
• Its high atomization enthalpy.