Consider the following thermal decomposition reactionsx→ Δelement having highest % in airy→ Δelement having highest % in earth crustThen compounds, x and y are respectively.
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a
NH42Cr2O7 ,K2Cr2O7
b
NH42CO3,K2CO3
c
NH4MnO4, KMnO4
d
NH43PO4, K3PO4
answer is A.
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Detailed Solution
In general ammonium compounds contain oxidising anion on decomposition produce nitrogen as one of the product.