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हाइड्रोजन की धातुओं, धातु आयनों तथा धातु ऑक्साइडों के साथ अभिक्रिया लिखिए।

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(i) हाइड्रोजन धातुओं से क्रिया करके, संगत धातु हाइड्राइड बनाती है

H2(g) + 2K(g)  → 2K+H-(s)

(ii) हाइड्रोजन, कुछ धातु आयनों के जलीय विलयन या उनके धातु ऑक्साइड (Fe से कम क्रियाशील) से क्रिया करके उन्हें धातुओं में अपचयित कर देती है। 

H2(g) + Pd2+(aq) → Pd(s) + 2H+(aq) 

H2(g) + CuO(s) → Cu(s) + H2O(l)

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