Which of the following ions does not liberate hydrogen gas on reaction with dilute acids ?

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1 Answer
Shwetank Mauria
Mar 5, 2018

#Mn^(2+)# does not liberate hydrogen gas on reaction with dilute acids

Explanation:

These are transition metals and reactivity decreases as we move from #Ti^(2+)# to #V^(2+)# to #Cr^(2+)# and finally #Mn^(2+)# in the fourth row of periodic table. As such #Mn^(2+)# does not liberate hydrogen gas on reaction with dilute acids.

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