Question

Which one of the alkaline earth metal carbonates is thermally the most stable ?
(a) $MgCO_{3}$
(b) $CaCO_{3}$
(c) $SrCO_{3}$
(d) $BaCO_{3}$

Answer 1

hey ,,,
As the electropositive character of the metal increases or the basicity of their hydroxide increases on moving down the group their .. Thermal stability increases. Thus BaCo3 is the most stable..
Hence, option ( D ) is correct.....
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