A) \[{{\left[ \text{A}{{\left( {{\text{H}}_{\text{2}}}\text{O} \right)}_{\text{4}}}{{\left( \text{OH} \right)}_{\text{2}}} \right]}^{\text{+}}}\]
B) \[{{\left[ \text{A}{{\left( {{\text{H}}_{\text{2}}}\text{O} \right)}_{3}}{{\left( \text{OH} \right)}_{3}} \right]}^{\text{+}}}\]
C) \[{{\left[ \text{A}{{\left( {{\text{H}}_{\text{2}}}\text{O} \right)}_{2}}{{\left( \text{OH} \right)}_{4}} \right]}^{-}}\]
D) \[\left[ \text{A}{{\left( {{\text{H}}_{\text{2}}}\text{O} \right)}_{6}}{{\left( \text{OH} \right)}_{3}} \right]\]
Correct Answer: C
Solution :
\[\frac{N}{{{N}_{0}}}=\frac{60}{100}={{\left( \frac{1}{2} \right)}^{n}}\] dissolves in NaOH solution to give \[\Rightarrow \] ion which is supposed to have the octahedral; complex species \[{{2}^{n}}=\frac{10}{6}\] in aqueous solution. \[\Rightarrow \] \[n\times 0.3=1-0.778=0.22\]
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