Which among the following method is the best for the preparationof BeF

1.	Which among the following method is the best for the preparationof BeF_(2)?
Answer» `(NH_(4))_(2) BeF_(4) OVERSET(Delta)to` `Be+F_(2) to` `BeO +C +F_(2) overset(Delta)hArr` `Be(OH)_(2(s)) +2HF to` Solution :The best REACTION of formation of `BeF_(2)` is the DECOMPOSITION of `(NH_(4))_(2)BeF_(4)` `(NH_(4))_(2)BeF_(4) overset(Delta)to BeF_(2)+2NH_(4)F`

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