JEE-Main 2019_CC_9-1-19_S2 - Competishun – Live JEE & NEET Courses and Exam Prep

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JEE MAIN 2019

09-01-19 S2

Question

The complex that has highest crystal field splitting energy (Δ), is

Select the correct option:

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl}_2$

$\mathrm{K}_2\left[\mathrm{CoCl}_4\right]$

$\mathrm{K}_3\left[\mathrm{Co}(\mathrm{CN})_6\right]$

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right] \mathrm{Cl}_3$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

For the same metal ion, greater the co-ordination number and greater the strength of the ligands, greater is the value of crystal field splitting energy $$ { }^{-} \mathrm{CN}>\mathrm{NH}_2>\mathrm{H}_2 \mathrm{O}>\mathrm{Cl}^{-} $$

Question Tags

JEE Main

Physics

Easy

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