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  4. Reaction of BeO with ammonia and hydrogen fluoride gives A which on thermal decomposition gives BeF 2 and NH 4 F. What is ' A prime ?

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Q. Reaction of $BeO$ with ammonia and hydrogen fluoride gives A which on thermal decomposition gives $BeF _2$ and $NH _4 F$. What is ' $A ^{\prime}$ ?

JEE MainJEE Main 2023The s-Block Elements

Solution:

$ BeO +2 NH _3+4 HF \rightarrow\left( NH _4\right)_2 BeF _4+ H _2 O $
$ \left( NH _4\right)_2 BeF _4 \stackrel{\Delta}{\longrightarrow} BeF _2+ NH _4 F $