OnlineCBT
Chemistry · PYQ NEET UG 2021
हिन्दीMatch List-I with List-II: List-I List-II i \( [\mathrm{Fe}(\mathrm{CN})_{6}]^{3-} \) a \( 5.92\text{ BM} \) ii \( [\mathrm{Fe}(\mathrm{H}_{2}\mathrm{O})_{6}]^{3+} \) b \( 0\text{ BM} \) iii \( [\mathrm{Fe}(\mathrm{CN})_{6}]^{4-} \) c \( 4.90\text{ BM} \) iv \( [\mathrm{Fe}(\mathrm{H}_{2}\mathrm{O})_{6}]^{2+} \) d \( 1.73\text{ BM} \) Choose the CORRECT answer from the options given below.
Match List-I with List-II:
| List-I | List-II | ||
|---|---|---|---|
| i | \( [\mathrm{Fe}(\mathrm{CN})_{6}]^{3-} \) | a | \( 5.92\text{ BM} \) |
| ii | \( [\mathrm{Fe}(\mathrm{H}_{2}\mathrm{O})_{6}]^{3+} \) | b | \( 0\text{ BM} \) |
| iii | \( [\mathrm{Fe}(\mathrm{CN})_{6}]^{4-} \) | c | \( 4.90\text{ BM} \) |
| iv | \( [\mathrm{Fe}(\mathrm{H}_{2}\mathrm{O})_{6}]^{2+} \) | d | \( 1.73\text{ BM} \) |
Choose the CORRECT answer from the options given below.
Correct answer · Option 3
\( \mathrm{i}-\mathrm{d}, \text{ ii}-\mathrm{a}, \text{ iii}-\mathrm{b}, \text{ iv}-\mathrm{c} \)
Explanation
Calculated magnetic moments from unpaired electrons \( n \): i. \( [\mathrm{Fe}(\mathrm{CN})_{6}]^{3-} \rightarrow n=1 \rightarrow 1.73\text{ BM (d)} \), ii. \( [\mathrm{Fe}(\mathrm{H}_{2}\mathrm{O})_{6}]^{3+} \rightarrow n=5 \rightarrow 5.92\text{ BM (a)} \), iii. \( [\mathrm{Fe}(\mathrm{CN})_{6}]^{4-} \rightarrow n=0 \rightarrow 0\text{ BM (b)} \), iv. \( [\mathrm{Fe}(\mathrm{H}_{2}\mathrm{O})_{6}]^{2+} \rightarrow n=4 \rightarrow 4.90\text{ BM (c)} \).
