Which of the following is the correct order in the spectrochemical series of ligands?
- A$Cl^{-} < F^{-} < C_2O_4^{2-} < NO_2^{-} < CN^{-}$
- B$CN^{-} < C_2O_4^{2-} < Cl^{-} < NO_2^{-} < F^{-}$
- C$C_2O_4^{2-} < F^{-} < Cl^{-} < NO_2^{-} < CN^{-}$
- D$F^{-} < Cl^{-} < NO_2^{-} < CN^{-} < C_2O_4^{2-}$
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Which of the following is the correct increasing order of ligand field strength according to the spectrochemical series?
Which among the following cations forms a least stable complex if the ligand is same?
Match List-$I$ (Molar Conductivity) with List-$II$ (Complex Formula) and select the correct option:
List-$I$ (Conductivity) List-$II$ (Formula) $A. \ 229$ $i. \ [Pt(NH_3)_3Cl_3]Cl$ $B. \ 97$ $ii. \ [Pt(NH_3)_4Cl_2]Cl_2$ $C. \ 404$ $iii. \ [Pt(NH_3)_5Cl]Cl_3$ $D. \ 523$ $iv. \ [Pt(NH_3)_6]Cl_4$
| List-$I$ (Conductivity) | List-$II$ (Formula) |
|---|---|
| $A. \ 229$ | $i. \ [Pt(NH_3)_3Cl_3]Cl$ |
| $B. \ 97$ | $ii. \ [Pt(NH_3)_4Cl_2]Cl_2$ |
| $C. \ 404$ | $iii. \ [Pt(NH_3)_5Cl]Cl_3$ |
| $D. \ 523$ | $iv. \ [Pt(NH_3)_6]Cl_4$ |
When $100 \ mL$ of $0.2 \ M$ solution of $CoCl_3 \cdot x NH_3$ is treated with excess of $AgNO_3$ solution,$3.6 \times 10^{22}$ ions are precipitated. The value of $x$ is $\left(N_A = 6 \times 10^{23} \ mol^{-1}\right)$
Transition elements in lower oxidation states act as Lewis acid because
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