A) \[{{F}_{2}}\]
B) \[{{H}_{2}}Si{{F}_{6}}\]
C) \[Ca{{F}_{2}}\]
D) \[NaF\]
Correct Answer: B
Solution :
HF cannot be stored in glass bottle. It reacts with silica present in glass to form fluorosilic acid. \[\underset{\begin{smallmatrix} silica\text { }from \\ glass \end{smallmatrix}}{\mathop{Si{{O}_{2}}+}}\,6HF\xrightarrow{{}}{{H}_{2}}Si{{F}_{6}}+{{H}_{2}}O\]
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