The Case of the Missing Elements

Can you name the missing chemical symbol that correctly completes each chemical formula?

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Chemical Name and FormulaMissing Chemical Symbol
Ozone: ___3
Adenosine Triphosphate (ATP): C10___16N5O13P3
Iron (III) Nitrate: ___3(NO3)3
Nonane: C9___16
Magnesium Phosphate: Mg3(___O4)2
Tungsten Carbide: ___C
Buckminsterfullerene: ___60
Mercury (II) Oxide: ___O
Chemical Name and FormulaMissing Chemical Symbol
Cysteine: HO2CCH(NH2)CH2___H
Glucose: C6H12___6
Hydrogen Cyanide: HC___
Acetylene: ___2H2
Disilicon Hexabromide: ___2Br6
Ammonium: ___H4+
Hypochlorite: ___O-
Copper (II) Sulfate: ___SO4

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