Question
BeF _2, is soluble in water whereas fluorides of other alkaline earth metals are insoluble because of
BITSAT
Chemistry
s Block Elements
2020
BITSAT 2020
BITSAT Chemistry Question (2020) — Solution
Options
- A. ionic nature of BeF _ 2 .
- B. covalent nature of BeF _ 2
- C. greater hydration energy of Be ^ 2+ ion as compared to its lattice energy.
- D. none of these.
Answer
C. greater hydration energy of Be ^ 2+ ion as compared to its lattice energy.
Step-by-step solution
Be ^ 2+ being small in size is heavily hydrated and heat of hydration exceeds the lattice energy. Hence BeF _ 2 is soluble in water.
Related: Chemistry — s Block Elements · All PYQ Banks