Despite having made a start on the f-block, I’m still pondering Group 3 and where to place scandium and yttrium. I like the suggestion Kit Chapman made to me, that I somehow represent the dilemma in my table. While I do want to settle on one way or the other for the table as a whole, I have stitched the two options in my pattern for mendelevium (look closely!): two pairs of tables showing scandium and yttrium to the left adjoining the s-block, or to the right with the other d-block elements. This element is of course named for Dmitri Mendeleev – the father of the Periodic Table. I wonder what he would make of the current shape of his discovery?