Ionization Energy and Electron Configuration

The video tutorial explains how to determine the element from a series of ionization energy values. It begins with an introduction and a question prompt, followed by a detailed explanation of ionization energy and its trends on the periodic table. The instructor uses sodium and magnesium as examples to illustrate how ionization energy changes when electrons are removed. The video concludes with a method to identify elements based on ionization energy values, emphasizing the significance of large energy gaps.

What is ionization energy?

• The energy required to split an atom

• The energy released when an atom gains an electron

• The energy required to remove an electron from an atom

• The energy required to add an electron to an atom

Which direction on the periodic table shows an increase in ionization energy?

• Up and to the right

• Up and to the left

• Down and to the left

• Down and to the right

Why is the second ionization energy of sodium much higher than the first?

• Sodium becomes a noble gas after losing two electrons

• Sodium becomes a noble gas after losing three electrons

• Sodium does not become a noble gas after losing electrons

• Sodium becomes a noble gas after losing one electron

What happens to magnesium after it loses two electrons?

• It becomes isoelectronic with krypton

• It becomes isoelectronic with argon

• It becomes isoelectronic with neon

• It becomes isoelectronic with helium

Why is it difficult to remove a third electron from magnesium?

• Because magnesium does not become a noble gas

• Because magnesium becomes a noble gas after losing three electrons

• Because magnesium becomes a noble gas after losing two electrons

• Because magnesium becomes a noble gas after losing one electron

In a series of ionization energies, what does a large jump between values indicate?

• The element has reached a noble gas configuration

• The element is losing electrons easily

• The element is gaining electrons

• The element is becoming more reactive

If an element has a large increase in ionization energy after losing three electrons, what can be inferred?

• The element is in column 3A of the periodic table

• The element is in column 2 of the periodic table

• The element is in column 4A of the periodic table

• The element is in column 1 of the periodic table

Which element fits the description of having a large ionization energy gap after losing three electrons?

• Sodium

• Magnesium

• Silicon

• Aluminum

What is the significance of an element feeling like a noble gas?

• It becomes a noble gas

• It becomes less reactive

• It becomes more reactive

• It becomes a metal

Which of the following elements is likely to have a +3 charge when it feels like a noble gas?

• Potassium

• Sodium

• Magnesium

• Aluminum