MCQ
The first, second and third Ionisation energies $(E_1 , E_2$ and $E_3)$ for an element are $7\, eV, 12.5\,eV$ nnd $42.5\, eV$ respectively. The most stable oxidation state of the element will be
- A$+1$
- B$+4$
- C$+3$
- ✓$+2$
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$Image$
The structure of $L -(-)$-glucose is
$\left[\mathrm{TeBr}_6\right]^{2-},\left[\mathrm{BrF}_2\right]^{+}, \mathrm{SNF}_3 \text {, and }\left[\mathrm{XeF}_3\right]^{-}$ (Atomic numbers : $\mathrm{N}=7, \mathrm{~F}=9, \mathrm{~S}=16, \mathrm{Br}=35, \mathrm{Te}=52, \mathrm{Xe}=54$ )