Consider the tetrahedral anions VO4^3- (orthovanadate ion), CrO4^2- (chromate ion), and MnO4^- (permanganate ion).

(a) These anions are isoelectronic. What does this statement mean?

(b)Would you expect these anions to exhibit d-d transitions? Explain.

(c) As mentioned in “A Closer Look” on charge-transfer color, the violet color of MnO4^- is due to a ligand-to-metal charge transfer (LMCT) transition. What is meant by this term? (d) The LMCT transition in MnO4^- occurs at a wavelength of 565 nm. CrO₄^2- The ion is yellow. Is the wavelength of the LMCT transition for chromate larger or smaller than that for MnO4^-? Explain. (e) The VO4^3- ion is colorless. Do you expect the light absorbed by the LMCT to fall in the UV or the IR region of the electromagnetic spectrum? Explain your reasoning.

Alpha Geek

(8)

Status NEW Posted 23 Jun 2017 04:06 PM My Price 7.00

-----------

Attachments

1498235173-1534018_1_636336391438445601_1.jpg

1498235175-1534018_2_636336391438445601_2.jpg

1498235177-1534018_3_636336391438445601_3.jpg

Not Rated(0)

• Buy Answer