Correct Answer - D
All the bicarbonates of alkaline earth metals are stable in solubiton only. They have never been isolated in the pure estate as on heating they are precipitated as insoluble carbonates:
`H(HCO_(3))_(2)overset(Delta)toMCO_(3)+CO_(2)+H_(2)O`
All te bicarbonates are prepared by passing `CO_(2)` through a suspension of metal carbonates in water.
`MCO_(3)+H_(2)O+CO_(2)toM(HCO_(3))_(2)`
