MCQ
“$925$ fine silver” means an alloy of :
- A$7.5 \% \,Ag$ and $92.5\% \ Cu$
- ✓$92.5 \% \, Ag$ and $7.5 \% \, Cu$
- C$80 \% \,Ag$ and $20 \% \, Cu$
- D$90 \% \,Ag$ and $10 \% \,Cu$
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$\left( A \right)\xrightarrow{{\operatorname{Re}duction}}\left( B \right)\xrightarrow{{HN{O_2}}}{C_2}{H_5}OH$
$(i)$ $Co^{3+}$ (Octahedral complex with a strong field ligand)
$(ii)$ $Co^{3+}$ (Octahedral complex with a weak field ligand like $F^-$ )
$(iii)$ $Co^{2+}$ (Tetrahedral complex)
$(iv)$ $Co^{2+}$ (Square planar complex)
$n = 3, l = 1, m_l = 0$