Exam 21: Transition Metals and Coordination Chemistry

Here are some crystal field representations of d electrons in an octahedral complex: I) II) III) IV) V) Choose the representation that fits the transition metal atom in the following species: -[Co(NH₃)₄Br₂]⁺

The strength of steel is due to the effect of what substance with the iron?

Pig iron usually contains about 5%:

Which of the following is not a typical step in metallurgy?

What heavy metal is the most abundant and most important to our civilization?

Which of the following is incorrect concerning the 3d,4d,and 5d transition series?

The geometry of a coordination compound with a coordination number of 4 is

The election configuration of Mn²⁺ is [Ar] 4s²3d³.

Which of the following is true in describing the crystal field model?

Which of the following complexes shows geometrical isomerism?

How many ligands are in this representative drawing of a complex ion?

A d⁶ ion (Fe²⁺)is complexed with six strong-field ligands (for example,SCN^-).What is the number of unpaired electrons in this complex?

Define stereoisomerism.

Give the number of geometrical isomers for the octahedral compound [MA₂B₂C₂],where A,B,and C represent ligands.

Which of the following coordination compounds will form a precipitate when treated with an aqueous solution of AgNO₃?

Suppose you are studying coordination compounds of Co(II)with the ligand pyridine (py,C₅H₅N,molar mass = 79.10).You isolate a crystalline compound,and since the only available anions are Cl^- and NO₃^-,you hypothesize the empirical formula of the coordination compound must be Co_w(py)_x(Cl)_y(NO₃)_z. -You discover that the complex decomposes in water.You dissolve 0.1000 g of the complex in H₂O and add excess NaHg(SCN)₄,which precipitates Co(II)as CoHg(SCN)₄(s).After the precipitate is washed and dried,its mass is 0.1102 g.How many grams of cobalt are contained in 0.1000 g of the complex?

How many unpaired electrons are found in each of the following complex ions? -Fe(CN)₆^4-

What is the electron configuration of the Ni(II)ion?

The ____ isomer of the complex Ni(en)₂Cl₂ exhibits optical isomers,but the _____ isomer does not.

What transition metal is used in stainless steel?