Practice Problem: Atomic Radii and Ionic Radii

The video tutorial covers the concepts of atomic and ionic radii, explaining how atomic radius increases as you move left and down the periodic table due to fewer protons and additional electron shells. It also discusses ionic radii, focusing on isoelectronic species and how the number of protons affects ionic size. The tutorial provides examples and trends to help understand these concepts.

Which of the following elements has the smallest atomic radius?

• Flerovium

• Krypton

• Germanium

• Lead

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

• It increases

• It remains the same

• It fluctuates

• It decreases

Which element is larger in atomic radius, bromine or germanium?

• Bromine

• Cannot be determined

• Germanium

• They are the same size

What is the correct order of elements in increasing atomic radius?

• Flerovium, Lead, Germanium, Bromine, Krypton

• Krypton, Bromine, Germanium, Lead, Flerovium

• Lead, Flerovium, Germanium, Bromine, Krypton

• Bromine, Krypton, Germanium, Lead, Flerovium

Which ion has the largest ionic radius among the following?

• Na+

• Mg2+

• O2-

• F-

What is the relationship between the number of protons and ionic radius in isoelectronic species?

• More protons result in a smaller ionic radius

• More protons result in a larger ionic radius

• Ionic radius is always the same for isoelectronic species

• Proton number does not affect ionic radius

Which of the following species is isoelectronic with neon?

• All of the above

• F-

• Mg2+

• O2-