Understanding Periodic Trends

Which of the following is NOT a periodic trend discussed in the video?

• Effective nuclear charge

• Atomic radius

• Melting point

• Ionization energy

What happens to the effective nuclear charge as you move right across a period?

• It fluctuates

• It decreases

• It remains constant

• It increases

How does atomic radius change as you move up a group in the periodic table?

• It increases

• It decreases

• It remains the same

• It doubles

What is ionization energy?

• Energy released when an electron is removed

• Energy required to add an electron

• Energy required to remove an electron

• Energy released when an electron is added

Which factor increases both ionization energy and effective nuclear charge?

• Decreasing atomic radius

• Increasing electron affinity

• Increasing atomic radius

• Decreasing electron affinity

What is electron affinity?

• The ability of an atom to lose electrons

• The ability of an atom to attract electrons

• The energy required to add an electron

• The energy required to remove an electron

How does electron affinity change as you move right across a period?

• It decreases

• It remains constant

• It fluctuates

• It increases

What is electronegativity?

• The ability of an atom to attract electrons from other atoms

• The energy released when an electron is added

• The energy required to remove an electron

• The ability of an atom to lose electrons

Which trend is most similar to electron affinity?

• Ionization energy

• Atomic radius

• Effective nuclear charge

• Electronegativity

What happens to electronegativity as effective nuclear charge increases?

• It decreases

• It remains constant

• It increases

• It fluctuates