MCQ
The oxidation number of $Cr$ in the complex ${[Cr{({H_2}O)_4}C{l_2}]^ + }$
- A$1$
- ✓$3$
- C$5$
- D$6$
✓
Answer
Correct option: B.
$3$
b
(b) ${[\mathop {Cr}\limits^{ * \,\,} {({H_2}O)_4}C{l_2}]^ + }$
(b) ${[\mathop {Cr}\limits^{ * \,\,} {({H_2}O)_4}C{l_2}]^ + }$
$x + 0 + 2\,( - 1) = + \,1$; $x - 2 = + \,1$
$x = + \,3$ for $Cr$ in complex.
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