Ionization Energy

Multiple Ionization Energies

Ionization Energy

• For each additional electron removed from an atom, the ionization energy increases.

• Always

• Core electrons are more difficult to remove than valence electrons

• They are closer to the nucleus so more attracted

• There will be a large jump in the ionization energy when core electrons begin to be removed.

Multiple Choice

Which electron will be considerably more difficult to remove from an atom of Boron because it is a core electron?

• 1st electron

• 2nd electron

• 3rd electron

• 4th electron

Multiple Choice

Which of the following elements will have the highest 3rd ionization energy (I₃)?

• Na

• Mg

• Al

• Si

Multiple Choice

Given the following ionization energies, how many valence electrons does this atom have?

I₁: 1086 I₄: 6220

I₂: 2350 I₅: 38,000

I₃: 4620 I₆: 47,261

• 2

• 3

• 4

• 5

Multiple Choice

Given the following ionization energies for an atom, determine the atom's identity?

I₁: 899

I₂: 1757

I₃: 14,850

I₄: 21,005

• Li

• Be

• B

• C

General Trends Practice

Multiple Choice

Which is larger?

• Ne

• F

Multiple Choice

Which is smaller?

• B

• Al

Multiple Choice

Which is smaller?

• Cr

• Cr³⁺

Multiple Choice

Which has a lower first ionization energy?

• K

• Ca

Multiple Choice

Which has a higher first ionization energy?

• Mg

• Ca

Multiple Choice

Which is more electronegative?

• P

• As