Identify the gases used to fill in electric bulbs.
- A$Ar$ and $N_2$
- B$He$ and $O_2$
- C$He$ and $N_2$
- D$Ne$ and $He$
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The chemical structures of $XeO_3$ and $XeOF_4$,respectively,are
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$a XeF_4 + b H_2O \rightarrow p Xe + q XeO_3 + r HF + s O_2$
In the clathrates of $Xe$ with water,the nature of bonding between $Xe$ and water molecule is
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