Atomic Radii

[005095564]

When do we use atomic radius in problems? What is it useful for and what exactly is it?

[Jada Brown 2H]

A couple things atomic radii is useful in: determining bond length, determining periodic trends such as ionization energy and electron affinity, determining compound size, etc.

[Maria Poblete 2C]

I don't think we'll ever need to calculate the value of an atomic radius, but we should know the trends of increasing/decreasing atomic radii across periods or groups of the periodic table. For example, the atomic radius gets smaller as you go from left to right in a period because the higher positive charge (atomic number) pulls the electrons closer and closer.

[britthanul234]

You should know the period trend for atomic radii. It increases as it goes down and left of the periodic table.

[Anokhi Patel 2B]

We can use atomic radii to determine the strength of the attraction of electrons to the atom compared how well the nucleus holds the electrons together.

[RichBollini4G]

We can use atomic radii to determine the strength of the attraction of electrons to the atom compared how well the nucleus holds the electrons together.

Very helpful!

[Annika Zhang 1F]

atomic radii is especially useful for determining strength of bonds, bond length, and periodic trends like electronegativity.

[105289321]

Good for determining bond length/strength

[ramiro_romero]

For strength in bonds will be most likely for the final. To the left and down are the trends for increasing atomic radii. The larger the distance between the centers of the atoms, the weaker the bonds. The weaker the bond, the stronger the acid and base (because a strong acid and base will completely dissociate in water).

[sbottomley3a]

It's very useful for determining bond strength and length! I don't think they can ask us to calculate it because it would need to be experimentally confirmed.

[simona_krasnegor_1C]

Something interesting that I read that I thought was worth sharing is that the term atomic radius can refer to an ionic radius, covalent radius, metallic radius, or van Der Waals radius!

[Binyu You]

I guess you need to understand how the trend of atomic radius is in periodic table. It can be used to determine trends such as electron affinity and ionization energy. So it is still fairly important to know.