VCE Stuff > VCE Chemistry
Question: Which element has a larger radius?
Collin Li:
You will not be asked to compare group VIII elements with the other 7 groups.
BA22:
The element of suprise
Its radius traps all.
principe:
--- Quote from: "coblin" ---You will not be asked to compare group VIII elements with the other 7 groups.
--- End quote ---
Okay then, that's a bit of a relief. But I still don't understand the concept behind it.
ezflow:
How do you quote people?
principe, the concept behind the group VIII elements is the same as the other 7... It has to do with how strongly the outer-shell electrons are pulled into the nucleus ---> core charge.
i.e. Neon has a higher core charge than Fluorine. Neon has 8 electrons in the outer-shell and Fluorine only has 7, but they are both in the same shell. etc. etc. etc. etc.
principe:
--- Quote from: "ezflow" ---How do you quote people?
principe, the concept behind the group VIII elements is the same as the other 7... It has to do with how strongly the outer-shell electrons are pulled into the nucleus ---> core charge.
i.e. Neon has a higher core charge than Fluorine. Neon has 8 electrons in the outer-shell and Fluorine only has 7, but they are both in the same shell. etc. etc. etc. etc.
--- End quote ---
Lol there's a quote button on the top right of each post. Anyways, yeah that's pretty much all I know, the increasing core charge would have a stronger pull on the electrons hence reducing the atomic radius. But yeah some exam solutions state that this rule is ignored when it comes to Group VIII elements, so I got confused. Hopefully it doesn't appear in this year's exam.
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