S.1.3.6 and S.1.3.7 Ionization Energies

Question 1

Limit of convergence

Answer 1

Corresponds to the ionization energy

Question 2

Ionization energy

Answer 2

Minimum amount of energy required to remove 1 mole of electrons from the ground state of 1 mole of gaseous atoms

H (g) –> H⁺ (g) + e⁻

Question 3

When does ionization occur?

Answer 3

When change in frequency is 0

Question 4

Ionization energy for one atom

Answer 4

E = hf

For 1 mole: E = hf/mol

Question 5

What gives information about electron configuration?

Answer 5

Successive ionization energy data

Question 6

From left to right across a period, ionization energies…

Answer 6

Generally increase

More energy is required to remove an electron from an atom because of an increase in the electrostatic force of attraction between nucleus and outer electrons

Question 7

Down a group, ionization energy…

Answer 7

Decreases

Less energy is required to remove outer electrons that are farther away from the attractive pull of the nucleus

Question 8

What provides further evidence for the existence of sublevels?

Answer 8

Regular discontinuities in the trend across the period

Question 9

Successive ionization energies

Answer 9

More energy required to remove second and successive electrons from an atom because the number of protons exceeds the number of remaining electrons while the electron-electron repulsion decreases

Electron clouds are pulled closer to the nucleus and held tighter by increased electrostatic attraction