
- ✓

- B

- C

- D








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Coordination no. $-$ Oxidation on. $-$ No. of $d-$electrons $-$ Unpaired $d-$electrons
True statement about sequence on the basis of assumption that $R$ contains $3$ different groups is
$\mathop R\limits^{\delta \oplus } \,\mathop {Br}\limits^{\delta \,\Theta } \, \rightleftharpoons $ $\mathop {\boxed{{R^ \oplus }B{r^\Theta }}}\limits_{(a)} \,\,\, \rightleftharpoons \,$$\,\mathop {\boxed{{R^ \oplus }}\,\boxed{B{r^\Theta }}\,}\limits_{(b)} \,\, \rightleftharpoons $ ${\boxed{{R^ \oplus }}}$ $ \rightleftharpoons $ $\mathop {\,\boxed{B{r^\Theta }}\,}\limits_{(c)} \,$
Given : $1 \,F =96500\, C \,mol ^{-1}$
Atomic mass of $Fe =56\, g \,mol ^{-1}$