Which of the following will not displace hydrogen?
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Correct option is C)
The standard reduction potentials (SRP) in volts (V) are given below.
In the reactivity series elements having a more negative value of SRP than hydrogen, they can displace hydrogen. That means those elements are more reactive than hydrogen. Hence, Ba, Pb, and Sn will displace hydrogen.
Elements having a more positive value of SRP than hydrogen cannot displace hydrogen.