Do lanthanides and actinides have group numbers?

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Do lanthanides and actinides have group numbers?

If so, when I am looking at a periodic table, how do I figure out what their numbers are?

2007-10-14 14:07:14 · 3 answers · asked by blah 6 in Science & Mathematics ➔ Other - Science

3 answers

The first answer is correct, either group III or ungrouped. See the reference for more details. Before you decide which answer to use, think about why you care. The physical and chemical properties of the rare earth elements have limited similarity with the classic group III elements.

2007-10-15 12:57:12 · answer #1 · answered by Frank N 7 · 0⤊ 1⤋

No, they are separated from the rest of the periodic table, so they are not given a group.

2007-10-15 02:34:45 · answer #2 · answered by drake_zula 2 · 0⤊ 0⤋

I believe that they are classified either in group 3 or ungrouped

2007-10-14 14:09:59 · answer #3 · answered by Steve 4 · 0⤊ 1⤋