How many of these metals can displace H(...

How many of these metals can displace `H_(2)` easily from acids.
`Fe, Mg, Al, Cu, Ag, Au, Zn`

A

Fluorine from NaF

B

Iodine from Nal

C

Bromine from NaBr

D

None of these

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The correct Answer is:

A

Because chlorine is less reactive (lesser reduction potential) than fluorine.

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