1.

Givereason for thefollowing : (i) A transitionmetalexhibits highestoxidation statein oxidesfluories . (ii) Cu^(2+) is unstablein anaqueoussolution.

Answer»

SOLUTION :(i) Thehighestoxidationstatein oxidesandflouridesis DUETO smallsize and highelectronegativityof and O
(ii)Many`Cu^(+)` compounds areunstablein aqueoussolutionand undergodisproportionation .
`2Cu toCu^(2+)+ Cu`
Thissuggestthat in aqueoussolution`Cu^(+) ` convertsinto `Cu^(2+)` . whichis dueto muchmorenegative `Delta _(HYD) H^(-)` of `Cu^(2-)` then `cu^(2+)` whichcompensatesmore forthesecondionisationenthalpyof Cu.


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