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Which among the following statements are true for the complex $[Co(NH_3)_6][Cr(CN)_6]$?
(i) It is a non-electrolyte
(ii) The magnitude of the charge on each complex ion is three
(iii) The complex will not conduct current in aqueous solution
(iv) The complex will exhibit co-ordination isomerism
(v) The magnitude of the charge on each complex ion is one

1 and 4
1 and 3
3 and 5
2 and 4
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