. . "0"^^ . . "valency"^^ . "0"^^ . . . "111436491"^^ . . . . . "110697850"@en-us . "valency"@en-us . . "the phenomenon of forming chemical bonds"@en-us . . . . "107784041"@en-us . "11436491-n"^^ . . . . . . . . . . .