`3` ampere current was passed through an aqueous solution of an unknown salt of `Pd` for `1` hr. `2.977 g` of `Pd^(n+)` was deposited at cathode. Find the value of `n`.

Answer

4

Explanation

For reduction: `Pd^(n+) + n e rarr Pd`
`(w)/E_(Pd) = (i xx t)/(96500)`
`(2.977)/(106.4//n) = (3 xx 1 xx 60 xx 60)/(96500)` implies `= 4`