Exam 22: The Transition Elements and Their Coordination Compounds

A certain transition element has the stable oxidation states of +2,+3,+4,+5,and +6.In which state will the element be most likely to form a covalent bond with chlorine?

The maximum oxidation state of an element in the first transition series never exceeds its group number.

According to valence bond theory,what would be the set of hybrid orbitals used when a Period 4 transition metal forms a square planar complex?

Iron(III)forms an octahedral complex with the ligand CN^-.How many unpaired electrons are in the d orbitals of iron?

The most common oxidation state for ions of the transition elements is

What is the difference between a coordination compound and a complex ion?

Which of the oxidation states of chromium has the largest valence-state electronegativity?

Which of the following atoms has the biggest radius?

a.How many unpaired 3d electrons will there be in (i)high and (ii)low-spin complexes of Co(II)? b.How can high and low-spin complexes be recognized and distinguished experimentally?

In complexes of transition metals,the maximum coordination number of the metal is equal to its number of d electrons.

Give the systematic name for [CoCl₃(H₂O)]^-.

In the compound K[Co(C₂O₄)₂(H₂O)₂] (where C₂O₄^2- = oxalate)the oxidation number and coordination number of cobalt are,respectively:

Write the formula for pentaamminechlorocobalt(III)chloride.

Give the systematic name for [Cu(NH₃)₄]Cl₂.

Valence Bond theory rationalizes octahedral geometry by assuming a d²sp³ hybridization pattern.

What is the highest possible oxidation state for molybdenum,Mo?

Octahedral complexes can exhibit geometric,optical,and linkage isomerism.

Which of the following ligands is most likely to form a high spin octahedral complex with cobalt(II)?

Why is the +2 oxidation state so common among transition elements?

Write the formula for diamminedichloroethylenediaminecobalt(III)bromide.