Question

Select the incorrect order for given property.

• A. $LiH > NaH > KH > RbH$ (Thermal stability)
• B. $CdCO _{3} > CaCO _{3} > K _{2} CO _{3}$ (Covalent character)
• C. $BeCO _{3}> MgCO _{3}> CaCO _{3}$ (Ease of oxide formation on heating at same temperature)
• D. $BeF _{2}> MgF _{2}> CaF _{2}> SrF _{2}$ (Solubility in water)

Answer 1

Answer: (D)

Solubility of fluorides of $IIA$

$BeF _{2} > BaF _{2} > SrF _{2} > CaF _{2} > MgF _{2}$

$\left( BeF _{2}\right.$ is most solúble $)$