Atomic Radii
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Atomic Radii
When do we use atomic radius in problems? What is it useful for and what exactly is it?
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Re: Atomic Radii
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.
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Re: Atomic Radii
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.
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Re: Atomic Radii
You should know the period trend for atomic radii. It increases as it goes down and left of the periodic table.
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Re: Atomic Radii
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.
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Re: Atomic Radii
Anokhi Patel 4G wrote: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!
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Re: Atomic Radii
atomic radii is especially useful for determining strength of bonds, bond length, and periodic trends like electronegativity.
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Re: Atomic Radii
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).
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Re: Atomic Radii
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.
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Re: Atomic Radii
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!
Re: Atomic Radii
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.
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