Periodic Trends Quiz

What are the two main phenomena that govern periodic trends?

• Ionization energy and shielding

• Z effective nuclear charge and shielding

• Z effective nuclear charge and electron affinity

• Electronegativity and atomic radius

What does Z effective nuclear charge primarily depend on?

• Atomic number and electron repulsion

• Atomic mass and electron affinity

• Ionization energy and atomic radius

• Electronegativity and shielding

How does shielding affect the attraction between the nucleus and valence electrons?

• It makes the attraction variable

• It increases the attraction

• It decreases the attraction

• It has no effect

As you move from left to right across a period, what happens to the atomic radius?

• It remains the same

• It decreases

• It fluctuates

• It increases

Why does the atomic radius increase as you move down a group?

• Because of increased nuclear charge

• Due to increased shielding

• Due to decreased atomic number

• Because of decreased electron repulsion

Which element has a larger atomic radius: Barium or Magnesium?

• Barium

• Magnesium

• They have the same atomic radius

• It depends on the isotope

What happens to the size of a cation compared to its neutral atom?

• It becomes larger

• It becomes smaller

• It remains the same

• It becomes variable

How does the size of an anion compare to its neutral atom?

• It becomes variable

• It remains the same

• It becomes larger

• It becomes smaller

As you move down a group, what happens to the ionic radius?

• It decreases

• It increases

• It fluctuates

• It remains constant

What is the primary reason for the increase in ionic radius as you move down a group?

• Increased nuclear charge

• Increased shielding

• Decreased electron affinity

• Decreased atomic number