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(i) Write the products formed in the rea...

(i) Write the products formed in the reaction of concentrated nitric acid with zinc.
(ii) d-block elements readily form complexes. Give reason.

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When copper reacts with concentrated nitric acid, reddish coloured poisonous nitrogen dioxide gas is formed.
`underset("Copper")(Cu_((s)))+ underset("conc. Natric acid")(4HNO_(3(aq)))to underset("Copper nitrate")(Cu (NO_(3))_(2(aq)))+ underset ("Nitrogen dioxide ")(2nO_(2(g)))+ underset("Water")(2H_(2)O_((l)))`
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