metalresearcher
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Why is Aluminum in groep 13 and not in 3 in periodic table ?
The properties of Al are more similar to scandium, yttrium and the rare earths, rather than the 'poor metals' gallium, indium and thallium.
So why is it placed on top of the column of the latter three metals ?
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DraconicAcid
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Because it's a p block element.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Sir_Gawain
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We don’t organize the periodic table by elements that seem similar in appearance, we organize them by atomic number and valence electrons.
“Alchemy is trying to turn things yellow; chemistry is trying to avoid things turning yellow.” -Tom deP.
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Texium
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Thread Moved
2-1-2025 at 11:56 |
Admagistr
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Aluminium is very similar to gallium, more so than yttrium, scandium and the elements you list.
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6dthjd1
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the chemistries of scandium compounds are quite different than those of aluminum. Compounds like aluminum trichloride are much more molecular than
ionic. Scandium has no such counterpart
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Texium
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Quote: Originally posted by 6dthjd1  | | the chemistries of scandium compounds are quite different than those of aluminum. Compounds like aluminum trichloride are much more molecular than
ionic. Scandium has no such counterpart |
Yes, and in that regard it is much more similar to boron than to
other metals. Along with having covalent, strongly Lewis acidic halides, there’s also the similarity of borohydride/aluminum hydride.
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