Exploring Atomic Radius and Periodic Trends

What is the primary challenge in measuring the atomic radius of an individual atom?

• The atomic radius is not constant.

• It is difficult to measure the distance between the nuclei of individual atoms.

• Atoms are always in motion.

• Atoms are too small to see.

How is the atomic radius typically measured?

• By measuring the diameter of an atom.

• By using a microscope.

• By measuring the distance between two combined nuclei and dividing by two.

• By counting the number of electrons.

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

• It decreases.

• It remains the same.

• It increases.

• It fluctuates randomly.

Why is strontium larger than magnesium?

• Strontium has fewer protons.

• Magnesium has more electrons.

• Strontium has more energy levels.

• Magnesium is in a different period.

Which of these atoms has a smaller atomic radius: oxygen or selenium?

• Oxygen

• Selenium

• It depends on the temperature

• Both have the same atomic radius

What happens to the atomic radius as you move across a period in the periodic table?

• It fluctuates randomly.

• It decreases.

• It increases.

• It remains the same.

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Why is calcium larger than bromine in atomic radius?

• Calcium has fewer protons.

• Bromine has fewer electrons.

• Calcium has more protons.

• Bromine is in a different group.

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Which of these atoms has a smaller atomic radius: carbon or neon?

• Both have the same atomic radius

• Carbon

• It depends on the temperature

• Neon

What does a higher nuclear charge do to the atomic radius?

• Increases it

• Decreases it

• Has no effect

• Makes it fluctuate

What do the dark regions on the atomic radius map represent?

• Areas of atoms with low atomic radius

• Areas of atoms with immeasurable sizes

• Areas of radioactive atoms

• Areas of atoms with high atomic radius