Exploring Ionization Energy and Periodic Trends

This video tutorial explores trends on the periodic table, focusing on ionization energy. It explains how ionization energy varies across periods and groups, using lithium and neon as examples. The concept of effective nuclear charge is introduced, highlighting its role in electron retention. The video also covers successive ionization energies, using calcium to illustrate the energy required to remove valence and core electrons. The tutorial concludes with a practical example of identifying elements based on ionization energy data.

Which of the following is NOT a trend discussed in Unit 1 Section 7?

• Melting Point

• Electronegativity

• Atomic Radius

• Ionization Energy

What happens to the distance of the outermost electrons from the nucleus as you move down the periodic table?

• It fluctuates

• It increases

• It remains the same

• It decreases

What is the first ionization energy?

• Energy required to remove a proton from an atom

• Energy required to remove the outermost electron from an atom in its gaseous form

• Energy required to split an atom

• Energy required to add an electron to an atom

Why is it more difficult to remove an electron from neon compared to lithium?

• Neon has a higher effective nuclear charge

• Neon has fewer protons

• Neon is a larger atom

• Neon has more energy levels

What does effective nuclear charge refer to?

• The number of neutrons in the nucleus

• The distance between the nucleus and the outermost electron

• The ability of protons to attract electrons

• The total number of protons in the nucleus

What is the trend in ionization energy as you move across a period from left to right?

• It decreases

• It fluctuates

• It remains constant

• It increases

What is indicated by a large jump in successive ionization energies?

• The atom has a high number of protons

• The atom has a high number of energy levels

• The atom has a high number of neutrons

• The atom has moved from valence to core electrons

How many valence electrons does calcium have?

• 1

• 2

• 4

• 3

Which element has three valence electrons based on ionization energy data?

• Lithium

• Beryllium

• Boron

• Aluminum

What can be predicted using ionization energy data?

• The type of element

• The number of protons in an atom

• The atomic mass of an element

• The number of neutrons in an atom