MCQ
Which of the following shall form an octahedral complex
- A${d^4}$ (low spin)
- B${d^8}$ (high spin)
- ✓${d^6}$ (low spin)
- DNone of these
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| List$-I$ (Oxoacids of Sulphur) | List$-II$ (Bonds) |
| $A$. Peroxodisulphuric acid | $I$. Two $S - OH$, Four $S = O$, One $S - O - S$ |
| $B$. Sulphuric acid | $II$. Two $S - OH$, One $S = O$ |
| $C$. Pyrosulphuric acid | $III$. Two $S - OH$, Four $S = O$, One $S - O - O - S$ |
| $D$. Sulphurous acid | $IV$. Two $S - OH$, Two $S = O$ |
Choose the correct answer from the options given below.
| Reaction | Product | |
| $I$ | $RX + AgCN$ | $RNC$ |
| $II$ | $RX + KCN$ | $RCN$ |
| $III$ | $RX + KNO_2$ | (image) |
| $IV$ | $RX + AgNO_2$ | $R-O-N = O$ |
