Most periodic tables are two-dimensional; three-dimensional tables are known to as far back as at least 1862 (pre-dating Mendeleev's two-dimensional table of 1869).
Kebanyakan tabel periodik adalah dua dimensi; namun, tabel tiga dimensi telah dikenal setidaknya sejak 1862 (sebelum tabel dua dimensi Mandeleev tahun 1869).