MCQ
The electronic configuration of central atom of complex $[MnO_4]^{2-}$ is
- A$t_2^1\,{e^0}$
- B$t_2^0\,{e^0}$
- C${e^0}\,t_2^0$
- ✓${e^1}\,t_2^0$
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$(I)$ $Be$ has smaller atomic radius compared to $Mg$
$(II)$ $Be$ has higher ionization enthalpy than $Al.$
$(III)$ Charge/radius ratio of $Be$ is greater than that of $Al$.
$(IV)$ Both Be and $Al$ form mainly covalent compounds.
$Toluene\,\, \xrightarrow[{2.\,{H^ + }}]{{1.\,KMn{O_4}/O{H^ - }}}I\xrightarrow{{SOC{l_2}}}II\xrightarrow{{N{H_3}}}III\xrightarrow{{OB{r^ - }}}IV$ is
