Ionic Radius and Charge Relationships

The video tutorial discusses the concept of ionic radius, differentiating it from atomic radius. It explains the effects of positive and negative charges on ionic size, focusing on cationic and anionic radii. The instructor uses examples like sodium and chlorine to illustrate how ionic radii change with charge. Feedback is encouraged to improve the teaching approach.

What is the main focus of the video?

• Ionic radius

• Molecular weight

• Atomic radius

• Chemical bonding

What is the difference between atomic radius and ionic radius?

• Ionic radius measures the distance between the nucleus and electrons in an ion

• Atomic radius is larger than ionic radius

• Ionic radius is the same as atomic radius

• Atomic radius is only applicable to ions

How does the ionic radius of a cation compare to its atomic form?

• It decreases

• It remains the same

• It becomes zero

• It increases

What happens to the ionic radius when an atom becomes a cation?

• The ionic radius becomes negative

• The ionic radius remains unchanged

• The ionic radius decreases due to electron loss

• The ionic radius increases due to electron gain

What is the effect of electron gain on the ionic radius of an anion?

• The ionic radius decreases

• The ionic radius remains the same

• The ionic radius increases

• The ionic radius becomes zero

How does the ionic radius of an anion compare to its atomic form?

• It becomes zero

• It increases

• It remains the same

• It decreases

Which ion would have the smallest ionic radius?

• A cation with a high positive charge

• A cation with a low positive charge

• An anion with a high negative charge

• An anion with a low negative charge

Which ion would have the largest ionic radius?

• A cation with a high positive charge

• A cation with a low positive charge

• An anion with a high negative charge

• An anion with a low negative charge

What is the relationship between ionic charge and ionic radius?

• Higher positive charge leads to a larger ionic radius

• Higher negative charge leads to a smaller ionic radius

• Higher positive charge leads to a smaller ionic radius

• Ionic charge does not affect ionic radius

In the comparison of ionic radii, which ion is the largest?

• Magnesium ion

• Lithium ion

• Chlorine ion

• Sulfur ion