Question

Which is the correct sequence of solubility of carbonates of alkaline earth metals?

• A. $BaCO_{3} > SrCO_{3} > CaCO_{3} > MgCO_{3}$
• B. $MgCO_{3} > CaCO_{3} > SrCO_{3} > BaCO_{3}$
• C. $CaCO_{3} > BaCO_{3} > SrCO_{3} > MgCO_{3}$
• D. $BaCO_{3} > CaCO_{3} > SrCO_{3} > MgCO_{3}$

Answer 1

Answer: (B)

$MgCO_{3} > CaCO_{3} > SrCO_{3} > BaCO_{3}$

Answer 2

: Solubility of carbonates decreases on moving down the group as hydration energy decreases.