#1. Which of the following statements is incorrect? a.) Chelating agents are pol

Question

#1. Which of the following statements is incorrect?

a.) Chelating agents are polydentate ligands that can share 2 or more electron pairs with the central metal ion.

b.) Complexes formed with chelating agents have large formation constants.

c.) Chelating agents are used to sequester metal ions from solution.

d.) The formation of complexes with chelating agents is an entropy driven process.

e.) All of the above statements are correct.

#2. Given the coordination compound [Co(NH3)5H2O]Cl3, which of the following

      statements is incorrect?

a.) The coordination number of the central ion is 5.

b.) NH3 is a ligand.

c.) H2O is a Lewis base

d.) Cl is a counter ion.

e.) Co has an oxidation state of +3.

#3. Consider the complex [CoF6]3 . Which of the following statements is incorrect?

a.) Fis a weak field ligand.

b.) The geometry around cobalt is octahedral

c.) The complex is in a high spin state.

d.) The complex is paramagnetic.

e.) All of the above statements are correct.

Explanation / Answer

Q-2

[Co(NH3)5H2O]Cl3

to this complex coordination is 6

so option a is correct answer

Q-3

[CoF6]3

all the given statements are correct regarding this complex

F- is week ligand

since it is week ligand electrons will not pair up so high spin state

unpaired electrons are there so para magnitic

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