Atom Comparison: 3s Orbital Proximity to Nucleus in Br, Cl, At, and I

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SUMMARY

The discussion centers on the proximity of the 3s orbital to the nucleus in the atoms Bromine (Br), Chlorine (Cl), Astatine (At), and Iodine (I). It is established that while all these atoms possess a 3s orbital, the distance of this orbital from the nucleus is influenced by the electrostatic attraction between the nucleus and the electrons. Astatine (At) exhibits the strongest attraction due to its higher nuclear charge, making its 3s orbital closest to the nucleus compared to the other elements discussed.

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Homework Statement


The question is..
In which of the following atoms is the 3s orbital closet to the nuclues...
Br,Cl,At,I




first off how are those atoms in the 3s orbital? I thought the 3s orbital where Na and Mg?
 
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There is no such things as "atom in 3s orbital".

Every atom HAS a 3s orbital, it is just not always filled.

In this case distance is a function of electrostatic attraction between nucleus and electron.
 
Ok, so in your opinion what is the answer to this question?
 
At over 300 posts you should already know nobody is going to answer the question for you.

What are nucleus charges in each case? Where is the attraction strongest?
 
The attraction is strongest in At.
 
So...?
 
so the orbital in the At atom is closet to the nucl.
 
Wasn't that hard.
 
Are you kidding me, my bain needs a break.
 

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