MCQ
Among the fluorides below, the one which does not exist is
- A$Xe{F_4}$
- ✓$He{F_4}$
- C$S{F_4}$
- D$C{F_4}$
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$\underset{Hexanal}{\mathop{C{{H}_{3\text{ }}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}CH=O}}\,$
$V^{+4},\,Ni^{+2},\, Ti^{+3}, \,Co^{+2}, \,Fe^{+3}, \,Cu^{+2}$