Atomic Radius Quiz

What is the atomic radius of an element?

• The distance between two atoms

• The distance from the nucleus to the outermost electron

• The diameter of an atom

• Half the distance between the nuclei of two covalently bonded atoms

How does the atomic radius change as you move across a period in the periodic table?

• It increases

• It fluctuates

• It remains constant

• It decreases

What causes the atomic radius to decrease across a period?

• Increase in nuclear charge and electron shells

• Decrease in atomic number

• Decrease in electron shells

• Increase in nuclear charge without additional electron shells

Which of the following best explains the trend of atomic radii across a period?

• Decrease in atomic number

• Increase in nuclear charge without additional electron shells

• Decrease in nuclear charge

• Increase in electron shells

What is the effect of increased nuclear charge on atomic size across a period?

• It decreases atomic size

• It causes atomic size to fluctuate

• It increases atomic size

• It has no effect on atomic size

As you move down a group in the periodic table, what happens to the atomic radius?

• It remains the same

• It decreases

• It increases

• It fluctuates

What effect does the increase in electron shells have on atomic radii down a group?

• It increases shielding and weakens nuclear attraction

• It reduces shielding

• It has no effect

• It strengthens nuclear attraction

What happens to the nuclear attraction as you move down a group?

• It increases

• It strengthens due to decreased shielding

• It remains constant

• It weakens due to increased shielding

Why does the atomic radius increase sharply between noble gases and alkali metals?

• Because of a decrease in atomic number

• Due to a decrease in electron shells

• Because of an additional principal quantum shell

• Due to a decrease in nuclear charge

What is the role of the principal quantum shell in atomic radius?

• It decreases the atomic radius by reducing electron shells

• It increases the atomic radius by adding more electron shells

• It decreases the atomic radius

• It has no effect on atomic radius