NEET Coordination Compounds — Set 19

Question 1

What is the charge on the coordination sphere in $ \ce{[Fe(CN)5NO]^2-} $?

Accepted Answer

In $ \ce{[Fe(CN)5NO]^2-} $, $ \ce{NO} $ is $ \ce{NO^+} $ (+1), 5 $ \ce{CN^-} $ = -5. Overall charge is -2. Thus, $ x + (-5) + 1 = -2 $, $ x = +2 $, but the sphere’s charge is -2.

Question 2

What is the IUPAC name of $ \ce{[Co(NH3)2(H2O)2Cl2]Cl} $?

Accepted Answer

Ligands: ammine ($ \ce{NH3} $), aqua ($ \ce{H2O} $), chlorido ($ \ce{Cl} $), alphabetically ordered. Co is +3 (balancing 3 $ \ce{Cl^-} $). Name: diamminediaquadichloridocobalt(III) chloride.

Question 3

The magnetic moment of $ \ce{[Fe(H2O)6]^3+} $ is approximately: (Fe atomic number = 26)

Accepted Answer

Fe$^{3+}$ ($ d^5 $) in $ \ce{[Fe(H2O)6]^3+} $ (octahedral) with weak field $ \ce{H2O} $ is high spin (5 unpaired electrons). Magnetic moment = $ \sqrt{5(5+2)} = \sqrt{35} \approx 5.92 $ BM.

NEET Chemistry: Coordination Compounds — Practice Set 19

Q1. What is the charge on the coordination sphere in \( \ce{[Fe(CN)5NO]^2-} \)?

Q2. What is the IUPAC name of \( \ce{[Co(NH3)2(H2O)2Cl2]Cl} \)?

Q3. The magnetic moment of \( \ce{[Fe(H2O)6]^3+} \) is approximately: (Fe atomic number = 26)

Q4. What is the hybridization of Ni in \( \ce{[Ni(NH3)6]^2+} \)?

Q5. What is the difference between the coordination number and the number of counter ions in \( \ce{[Fe(H2O)6]Cl3} \)?

Q6. Which complex has a primary valence of 3 as per Werner’s theory?

Q7. What is the shape of \( \ce{[CoCl2(en)2]^+} \)?

Q8. Which complex exhibits coordination isomerism with \( \ce{[Co(NH3)6][Cr(CN)6]} \)?

Q9. What is the hybridization of Mn in \( \ce{[Mn(CN)6]^4-} \)?

Q10. Which complex has a coordination number equal to its oxidation state?