Please explain me iiiB group of the periodic table.?? Thank you.

1 Answer
Truong-Son N.
Jul 19, 2017

It is usually considered to contain the entire #f#-block, but it doesn't really matter. I would have said #"La"# and #"Ac"# are the only lanthanide or actinide in group #"IIIB"#, since they don't have outer-core #f# electrons.

But, it seems that group #"IIIB"# contains #"Sc"#, #"Y"#, and #"La" - "Lu"#, and #"Ac" - "Lr"#.

www.meta-synthesis.com

Another periodic table shows:

slideplayer.com

and another one shows:

www.sciencegeek.net

either of which would have shown the first or last #f# block element as in group #"IIIB"#. Honestly, it doesn't really matter.

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