Transition elements and quantitative analysis

Question 1

bidentate ligand

Answer 1

a ligand which forms two coordinate bonds with a central metal ion

Question 2

complex ion

Answer 2

a transition metal ion surrounded by ligands, connected by coordinate bonds

Question 3

coordinate bond

Answer 3

a covalent bond where the shared pair of electrons come from the same atom

Question 4

coordination number

Answer 4

the total number of coordinate bonds formed between the central metal ion and ligands

Question 5

disproportionation

Answer 5

a reaction where the same element is oxidised and reduced

Question 6

hexdentate ligand

Answer 6

a ligand which forms six coordinate bonds with a central metal ion

Question 7

ligand

Answer 7

a molecule or ion which can donate a pair of electrons to a central metal ion

Question 8

ligand substitution

Answer 8

a reaction in which one complex ion is replaced with another ligand

Question 9

optical isomers

Answer 9

molecules which are non-superimposable mirror images

Question 10

sterioisomer

Answer 10

species with the same structural formula but a different arrangment of atoms in space

Question 11

transition element

Answer 11

a d-block element that forms at least one ion with an incomplete d sub-shell - more than one oxidation state, form coloured ions and act as catalysts