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Specialty Chemistry Forums => Other Sciences Question Forum => Topic started by: Anthe on September 28, 2005, 04:01:49 AM

Title: Wich column for Lanthanum and Actinium
Post by: Anthe on September 28, 2005, 04:01:49 AM

Hi all.

Do Lanthanum and Actinium both belong to column 3, Cerium and Thorium to column 4 etc, and if so why is it mostly not clear in the graphics.
Or is it not that obvious where they belong.

Thanks,
Annemieke

Title: Re:Wich column for Lanthanum and Actinium
Post by: Mitch on September 28, 2005, 04:03:58 AM

You mean our periodic table?

Title: Re:Wich column for Lanthanum and Actinium
Post by: Anthe on September 28, 2005, 04:10:05 AM

Yes, I mean the Periodic table, should have been more clear.

Title: Re:Wich column for Lanthanum and Actinium
Post by: Mitch on September 28, 2005, 01:55:37 PM

They don't belong in column 3,4 though. They are part of their own series.

Title: Re:Wich column for Lanthanum and Actinium
Post by: Anthe on September 28, 2005, 02:26:12 PM

So it is not that eg Samarium and Plutonium are in the same column as Ferrum, Ruthenium and Osmium are?

Title: Re:Wich column for Lanthanum and Actinium
Post by: Mitch on September 28, 2005, 02:34:31 PM

Exactly