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A single displacement reaction is repres...

A single displacement reaction is represented by `X_((a))+2HCl_((aq)) to XCl_(2(aq))+H_(2(g))`. Which of the following(s) could be X.
(i) Zn
(ii) Ag
(iii) Cu (iv) Mg.

A

`i` and ii

B

ii and iii

C

iii and iv

D

`i` and iv

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