* not completed

. Identify the correct statement:

The inner-sphere complex together with the outer-sphere complex form a coordination compound. correct incorrect

In the inner-sphere complex the ligands are attached directly to the central metal atom or ion while the outer-sphere complex is formed through electrostatic association between complex cations and anions. correct incorrect

The outer-sphere complex is always present and follows its inner-sphere counterpart. correct incorrect

* not completed

. The ligand is:

a donor that provides an electron pair to form the bond in the complex; it is a Lewis base correct incorrect

an acceptor atom that accepts electron pair to form the bond in the complex; it is a Lewis acid correct incorrect

a donor that provides electrons to form the bond in the complex; it is a Lewis acid correct incorrect

* not completed

. The coordination number of the central metal atom in the complexes [AgCl₂]^–, Me–Hg–Me, and Cu(acac)₂ (acac is an acronym for acetylacetonato ligand) is:

one in [AgCl₂]^– and two in Me-Hg-Me and Cu(acac)₂ correct incorrect

two in all of them correct incorrect

two [AgCl₂]^– and Me-Hg-Me, but four in Cu(acac)₂ correct incorrect

* not completed

. If the central atom has a coordination number of four, then the geometry of the complexes is:

tetrahedral, if the central atom is small and the ligands are large correct incorrect

square planar, if the central atom is small and the ligands are large correct incorrect

tetrahedral, if the central atom is small and has a d⁸ electronic configuration correct incorrect

* not completed

. The aqua complex of Nd³⁺ is most likely to exhibit a coordination number of:

15 correct incorrect

6 correct incorrect

9 correct incorrect

* not completed

. Chelates are complexes that can be formed by:

monodentate ligands correct incorrect

ambidentate ligands correct incorrect

polydentate ligands correct incorrect

* not completed

. The compounds [Cr(H₂O)₆]Cl₃, [Cr(H₂O)₅Cl]Cl₂·H₂O, and [Cr(H₂O)₄Cl₂]Cl·2H₂O are examples of:

hydrate isomerism correct incorrect

ionization isomerism correct incorrect

coordination isomerism correct incorrect

* not completed

. Which statement is correct?

Tetrahedral complexes can form optical isomers. correct incorrect

Complexes with the general formula MA₄B₂ can form mer- and fac-isomers. correct incorrect

Complexes with the general formula MA₃B₃ can form cis- and trans-isomers. correct incorrect

* not completed

. Which of the following octahedral complexes could exhibit chirality:

[MA₂B₂C₂] correct incorrect

[MA₃B₂C] correct incorrect

[MA₄B₂] correct incorrect

* not completed

. The formation constant, K_f, of a complex is a measure of:

the rate at which a complex is formed from the metal ions and the ligands in the gas phase correct incorrect

the strength of the interaction between the ligands and the metal center relative to the strength of interaction between the solvent molecules and the metal center correct incorrect

the rate at which the complex enters in chemical reactions correct incorrect