Understanding Periodic Trends

What happens to the atomic radius as you move down a group in the periodic table?

• It increases due to added energy levels.

• It fluctuates randomly.

• It remains the same.

• It decreases due to fewer energy levels.

What is the effect of adding protons to the nucleus as you move across a period?

• The atomic radius remains unchanged.

• The atomic radius decreases.

• The atomic radius increases.

• The atomic radius fluctuates.

What is the term used to describe the increase in positive charge in the nucleus as protons are added?

• Electron affinity

• Nuclear decay

• Effective nuclear charge

• Atomic mass

How does a larger atomic radius affect ionization energy?

• It causes ionization energy to fluctuate.

• It has no effect on ionization energy.

• It decreases ionization energy.

• It increases ionization energy.

Which of the following trends is NOT directly related to atomic radius?

• Atomic mass

• Electron affinity

• Electronegativity

• Ionization energy