Chapter 10 Ionization Energy Ionization Energy Ionization energy

Chapter 10 Ionization Energy

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 to atomic size and effective nuclear charge?

How would you relate ionization energy to atomic size and effective nuclear charge? • Large atoms with low effective nuclear charge have low ionization energies. • Small atoms with high effective nuclear charge have high ionization energies.

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 k. J/mol 1 H 2 3 4 5 6 7 1312 He 2372 5250 Li 520 7297 11810 Be 899 1757 14845 21000 B 800 2426 3659 C 1086 2352 4619 6221 37820 47260 N 1402 2855 4576 7473 9442 25020 32820 53250 64340

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

Homework • Ionization Energy Worksheet