Better method for preparation of $\mathrm{BeF}_{2}$, among the following is :
Solution
According to the NCERT (s block) textbook, the better method for the preparation of BeF₂ is heating (NH₄)₂BeF₄.
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Option B :
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$$\left(\mathrm{NH}_{4}\right)_{2} \mathrm{BeF}_{4} \stackrel{\Delta}{\longrightarrow} \mathrm{BeF}_{2} + 2\mathrm{NH}_{4}\mathrm{F}$$
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This method involves the thermal decomposition of ammonium beryllium fluoride ((NH₄)₂BeF₄) to form beryllium fluoride (BeF₂) and ammonium fluoride (NH₄F). The reaction is more efficient compared to other options and results in a purer product.
About this question
Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals
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