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Element (A) burns in nitrogen to give an...

Element (A) burns in nitrogen to give an ionic compound, `(B)` reacts with water to give (C) and (D). A solution of (C) becomes milky on bubbling carbon dioxide. Idendity (A),(B),(C) and (D)

Text Solution

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The given data suggest the following reactions:
`3Ca(A)+N_(2)rarr Ca_(2)(OH)_(2)(C )+2NH_(3)(D)`
`Ca(OH)_(2)(C )+CO_(2)rarr CaCO_(3)+H_(2)O`
It is given that a solution of C becomes 'milky' on bubbling carbon dioxide. Therefore, it must be calcium or barium hydroxide which is more soluble than magnesium hydroxide.
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