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

2113 251 JEE MainJEE Main 2017The d-and f-Block Elements Report Error

A

$T i^{2 +}$

12%

B

$V^{2 +}$

18%

C

$C r^{2 +}$

19%

D

$M n^{2 +}$

50%

Solution:

$M n^{2 +}$