What two first-row transition metals have unexpected electron configurations? A statement in the text says that first-row’ transition metal ions do not have 4s electrons. Why not? Why do transition metal ions often have several oxidation stares, whereas representative metals generally have only one?
Answer to relevant QuestionsWhat is the lanthanide contraction? How does the lantha¬nide contraction affect the properties of the 4d and 5d transition metals? Chromium (VI) fonns two different oxyanions, the orange dichromate ion (Cr2O72-) and the yellow chromate ion (CrO42-). The equilibrium reaction between the two ions is Name the following coordination compounds. a. [CO(NH3)6]Cl2 b. [Co(H2O)6]I3 c. K2[PtCL4] d. K4[PtCI6] e. [Co(NH3)5CI]Cl2 f. [Co(NFF3)3(NO2)3] Draw structures for each of the following. a. Cis-dichloroethylenediamineplatinum(II) b. Trans-dichlorobis(ethylenediamine)cobalt(II) c. Cis-retraamminechloronirrocobalt(III) ion d. Trans-tetraamminechloronitritocobalt(III) ...Draw all the geometrical isomers of [Cr(en)(NH3)2BrCl]+. Which of these isomers also have an optical isomer? Draw the various isomers.
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