Indicate chemical element X, which can form acid of composition НХ04.

Cl-HClO4 (perchloric acid)
Mn-HMnO4 (manganic acid)
НReO4 (Rhenic acid)
HNO4 (Nitric acid)
Acids are complex substances consisting of one or more hydrogen atoms that can be replaced by metal atoms, and acid residues. All of these acids are monobasic and oxygen-containing.



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