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Q) Which of the following ions does not liberate hydrogen gas on reaction with dilute acids ?
a) Mn^2+
b) Ti^2+
c) V^2+
d) Cr^2+
JEE MAINS (Online , 2017 )
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Answered by
7
Answer
(a) Mn^2+
★Explanation★
The third ionization energy of Mn is too high due due to stable half filled 3d-orbital. Hence, it cannot further get oxidized to liberate hydrogen.
Answered by
24
_________Mn²+________
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