Podcast
Questions and Answers
What causes the ionic radius to vary?
What causes the ionic radius to vary?
Why do ionic radii increase with the number of surrounding bonds?
Why do ionic radii increase with the number of surrounding bonds?
How does an increase in spin affect the ionic radius?
How does an increase in spin affect the ionic radius?
What happens to the ionic radius if an ion increases in positive charge?
What happens to the ionic radius if an ion increases in positive charge?
Signup and view all the answers
Why does an ion increasing in negative charge increase its atomic radius?
Why does an ion increasing in negative charge increase its atomic radius?
Signup and view all the answers
What influences the tightness of the electron cloud around a central ion?
What influences the tightness of the electron cloud around a central ion?
Signup and view all the answers
Which factor determines the increase of ionic radii with an increase in spin?
Which factor determines the increase of ionic radii with an increase in spin?
Signup and view all the answers
How does the ionic radius differ from the atomic radius?
How does the ionic radius differ from the atomic radius?
Signup and view all the answers
In what scenario would an ionic radius decrease?
In what scenario would an ionic radius decrease?
Signup and view all the answers
What effect does an increase in the spin of an ion have on its ionic radius?
What effect does an increase in the spin of an ion have on its ionic radius?
Signup and view all the answers
How does the number of surrounding bonds impact the ionic radius?
How does the number of surrounding bonds impact the ionic radius?
Signup and view all the answers
What causes a decrease in the tightness of the electron cloud around a central ion?
What causes a decrease in the tightness of the electron cloud around a central ion?
Signup and view all the answers
How does an increase in coordination number affect the electron cloud around a central ion?
How does an increase in coordination number affect the electron cloud around a central ion?
Signup and view all the answers
Which factor influences the electron cloud's tightness around a central ion?
Which factor influences the electron cloud's tightness around a central ion?
Signup and view all the answers
Study Notes
### Factors Affecting Ionic Radius
- Number of Surrounding Bonds: As the number of bonds around a central ion increases, the ionic radius increases. This is because the electrons of the central ion are repelled by the electrons of the surrounding ions, causing the electron cloud to expand.
- Charge: As the positive charge of an ion increases, the ionic radius decreases. This is due to the stronger attraction between the nucleus and the electrons, pulling the electron cloud closer to the nucleus.
- Spin: An increase in spin causes an increase in the ionic radius. This is because the electrons occupy a larger volume of space when their spin is higher.
- Increase in Negative Charge: When an ion gains electrons and increases in negative charge, the ionic radius increases. This is because the increased electron-electron repulsion causes the electron cloud to expand.
Tightness of the Electron Cloud
- The tightness of the electron cloud around a central ion is influenced by the charge of the ion, the number of surrounding bonds, and the spin of the electrons.
Ionic Radius vs Atomic Radius
- Atomic Radius: The radius of an atom is measured from the center of the nucleus to the outermost shell of electrons.
- Ionic Radius: The radius of an ion is measured from the center of the nucleus to the outermost shell of electrons.
Decrease in Ionic Radius
- The ionic radius can decrease if the ion loses electrons and becomes more positively charged. This stronger attraction draws the electron cloud closer to the nucleus, resulting in a smaller radius.
Coordination Number and Electron Cloud
- The coordination number, which describes the number of surrounding bonds in an ionic structure, has a significant influence on the electron cloud. An increase in coordination number results in a larger electron cloud, due to increased repulsions between electrons.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about how atoms can become ions by gaining or losing electrons, leading to changes in their atomic and ionic radii. Understand the concept of cations and anions and how they affect the size of an element's ions.
