Which of the following does not exist in solid state?
A
CaCO3
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B
BaCO3
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C
Be(HCO3)2
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D
SrCO3
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Solution
The correct option is DBe(HCO3)2 The bicarbonates of group-2 elements exist in aqueous solutions only. Beryllium bicarbonate, i.e., Be(HCO3)2 does not exist in solid state. The carbonates of calcium, strontium and barium exist in solid state.