Coordination Compounds Practice Flashcards

Chlorophyll, haemoglobin, and vitamin B12 are coordination compounds of magnesium, __________, and cobalt respectively.

iron

Alfred Werner proposed the concept of a __________ valence and a secondary valence for a metal ion.

primary

According to Werner's theory, primary valences are normally ionisable and satisfied by __________ ions.

negative

Secondary valences in coordination compounds are non-ionisable and equal to the __________ number.

coordination

The species enclosed within the square bracket in a coordination formula are coordination entities, while the ions written outside are called __________ ions.

counter

Alfred Werner became the first Swiss chemist to win the Nobel Prize in __________ for his work on the linkage of atoms.

1913

A ligand that can bind to a central metal ion through two donor atoms simultaneously is described as a __________ ligand.

didentate

Ethylenediaminetetraacetate ion ($\text{EDTA}^{4-}$) is an important __________ ligand that binds through two nitrogen and four oxygen atoms.

hexadentate

Ligands that have two different donor atoms and can coordinate through either of the two atoms are called __________ ligands.

ambidentate

Complexes in which a metal is bound to only one kind of donor group are known as __________ complexes.

homoleptic

Complexes in which a metal is bound to more than one kind of donor group are known as __________ complexes.

heteroleptic

In a square planar complex of formula $[MX_2L_2]$, when two X ligands are arranged adjacent to each other, it is called the __________ isomer.

cis

In octahedral coordination entities of the type $[Ma_3b_3]$, if three donor atoms of the same ligand occupy adjacent positions at the corners of an octahedral face, the compound is called the __________ isomer.

facial (fac)

Based on the provided figure of coordination polyhedra shapes, the spatial arrangement shown fourth from the left (labeled Trigonal bipyramidal) corresponds to a coordination number of __________.

5

In the shown diagram of $[Co(NH_3)_3(NO_2)_3]$, the structure on the left labeled 'fac-' represents the __________ isomer.

facial