Chapter 10 Ionization Energy

Ionization energy is the energy needed to remove an electron from an atom or ion.

First Ionization Energy First Ionization energy is the energy needed to remove the first electron from an atom.

First Ionization Energy Francium has the lowest first ionization energy.

How would you relate ionization energy, atomic size, effective nuclear charge, and reactivity? Larger atoms with low effective nuclear charge have low ionization energies and are very reactive because it is easy to remove electrons from them. Smaller atoms with high effective nuclear charge have high ionization energies and are very reactive because it is easy for them to pull electrons from other atoms.

Ionization Energy First Ionization energy is the energy needed to remove the first electron from an atom. Multiple Ionization Energies Second Ionization energy is the energy needed to remove the second electron from an atom.

Multiple Ionization Energies How many ionization energies does carbon have?

Ionization Energies in kJ/mol H1312 He Li Be B C N

Multiple Ionization Energies What happens to carbon’s size and effective nuclear charge as you remove electrons?

Teacher Demonstrations Sodium and water Potassium and water

Homework Lab Summary: Reactivity and the Periodic Table (due tomorrow). Ionization Energy Worksheet (Due Wednesday). Study Guide Chapter 10 (Due Wednesday).