How to tell if your periodic table is the "correct" one

Look just below element 39 - yttrium. If 71Lu is there - first element in the d-block, Row 6 - then your table is correct. If 57La is there, or something else, then get a different table. Lutetium is a d-block element and lanthanum belongs in the f-block.

Here is a correct version (PDF: 8-1/2 x 11 or A4) for use in any chemistry class.


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