NEET Coordination Compounds — Set 9

Question 1

What is the hybridization of Mn in $ \ce{[Mn(H2O)6]^2+} $?

Accepted Answer

$ \ce{[Mn(H2O)6]^2+} $ (Mn$^{2+}$, $ d^5 $) with weak field $ \ce{H2O} $ in an octahedral field is high spin, using outer orbitals ($ sp^3d^2 $).

Question 2

What is the primary valence of Mn in $ \ce{[Mn(H2O)4Cl2]Cl} $?

Accepted Answer

In $ \ce{[Mn(H2O)4Cl2]Cl} $, $ \ce{[Mn(H2O)4Cl2]^+} $ balances 1 $ \ce{Cl^-} $. Mn is +3, 2 $ \ce{Cl^-} $ = -2, charge = +1. Primary valence = +3.

Question 3

Which ligand is an example of a bidentate ligand?

Accepted Answer

A bidentate ligand binds to a metal ion through two donor atoms. Ethane-1,2-diamine ($ \ce{H2NCH2CH2NH2} $, abbreviated as en) has two nitrogen atoms that can donate electron pairs, making it bidentate.

NEET Chemistry: Coordination Compounds — Practice Set 9

Q1. What is the hybridization of Mn in \( \ce{[Mn(H2O)6]^2+} \)?

Q2. What is the primary valence of Mn in \( \ce{[Mn(H2O)4Cl2]Cl} \)?

Q3. Which ligand is an example of a bidentate ligand?

Q4. Which complex is diamagnetic?

Q5. The EAN of Mn in \( \ce{[Mn(CO)5]^-} \) is: (Mn atomic number = 25)

Q6. Which complex is diamagnetic?

Q7. What is the total number of atoms directly bonded to the metal in \( \ce{[Fe(en)(H2O)3Cl]^+} \)?

Q8. In \( \ce{[Co(NH3)5Cl]^2+} \), how many electrons are donated by the ligands to the cobalt ion?

Q9. How many unpaired electrons are present in \( \ce{[FeCl4]^-} \)? (Fe atomic number = 26)

Q10. What is the total number of electrons donated by ligands to the metal in \( \ce{[Ni(en)3]^2+} \)?