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BITSAT 2020
Exam
BITSAT
Year
2020
Subject
Chemistry
Chapter
s Block Elements

BITSAT 2020 · Chemistry · s Block Elements

BeF_2, is soluble in water whereas fluorides of other alkaline...

BeF2,\mathrm{BeF}_2, is soluble in water whereas fluorides of other alkaline earth metals are insoluble because of

Options

  1. Aionic nature of BeF2\mathrm{BeF}_{2}.
  2. Bcovalent nature of BeF2\mathrm{BeF}_{2}
  3. Cgreater hydration energy of Be2+\mathrm{Be}^{2+} ion as compared to its lattice energy.
  4. Dnone of these.

Correct answer

C. greater hydration energy of Be2+\mathrm{Be}^{2+} ion as compared to its lattice energy.

Step-by-step solution

Be2+\mathrm{Be}^{2+} being small in size is heavily hydrated and heat of hydration exceeds the lattice energy. Hence BeF2\mathrm{BeF}_{2} is soluble in water.
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