The appearance of univalence in the table of elements.

[1] ATEN, 1910, Z PHYS CHEM, V73, P592

[2] BELLUCCI, 1914, Z ANORGAN ALLG CHEM, V86, P88

[3] CANZONERI, 1897, GAZZ CHIM ITAL, V27, P486

[4] DENHAM, 1908, J CHEM SOC, V93, P837

[5] DENHAM, 1919, J CHEM SOC, V115, P556

[6] EGGINK, 1908, Z PHYS CHEM, V64, P494

[7] EGGINK, 1908, Z PHYS CHEM, V64, P495

[8] FISCHER NW, P A, V71, P436

[9] GRIMM, 1929, NATURWISSENSCHAFTEN, P535

[10] GRIMM, 1929, NATURWISSENSCHAFTEN, P557

[1] ATEN, 1910, Z PHYS CHEM, V73, P592

[2] BELLUCCI, 1914, Z ANORGAN ALLG CHEM, V86, P88

[3] CANZONERI, 1897, GAZZ CHIM ITAL, V27, P486

[4] DENHAM, 1908, J CHEM SOC, V93, P837

[5] DENHAM, 1919, J CHEM SOC, V115, P556

[6] EGGINK, 1908, Z PHYS CHEM, V64, P494

[7] EGGINK, 1908, Z PHYS CHEM, V64, P495

[8] FISCHER NW, P A, V71, P436

[9] GRIMM, 1929, NATURWISSENSCHAFTEN, P535

[10] GRIMM, 1929, NATURWISSENSCHAFTEN, P557