Unit 5 - transition metals

definition of a transition metal is...

is zinc a transition metal?

is scandium a transition metal?

the physical properties of transition metals from titanium to copper are...

what is the reactivity like in transition metals

for the electronic configuration of transitions metals, all of them have two outer 4s electrons in them except...

generally as we go across the transition metals

describe the electron configuration of chromium

describe the electron configuration of copper

do the electronic configuration with a full 3d and 4s sub level

what are the 4 chemical properties of transition metal?

what does variable oxidation states mean?

if an element has many oxidation states, what does this mean?

what does colour mean as a characteristic of a transition metal?

what does catalysis mean?

where is iron used as a catalyst

where is vanadium oxide used as a catalyst

what is manganese oxide used as a catalysis for?

what does complex formation mean?

when is a complex ion formed

how are the ligands bonded to the transition metal in a complex ion?

[Cu(H20)6]2+ is an example of a

all transition metals can form co-ordinate bonds by

a ligand is

4 examples of ligands are:

the co-ordination number

an ion with an octahedral shape has

a tetrahedral shape is

[Co(NH3)6]3+

[CoCl4]2- is an example of

draw [Co(NH3)6]3+

draw [CoCl4]2-

Multidentate ligands are

ethane-1,2-diamine is an example of

draw ethane-1,2-diamine

benzene-1,2-diol is an example of

draw benzene-1,2-diol

ethanedioate ion, (C2O4)2-, is an example of a

draw ethanedioate ion, (C2O4)2-

(EDTA)4- is an example of a

(EDTA)4- is called

draw (EDTA)4-

(EDTA)4- can act as a

chelates are

chelate can be used to

haemoglobin is

haemoglobin is responsible for

haemoglobin consists of an

from the 6 co-ordination number, 4 of them

all ligands are

Cl- ion is a bigger ligand than the ammonia and

the oxidation state of the metal ion =

work out the oxidation state of [CoCl4]2-(aq)

most complexes with four ligands usually have a tetrahedral shape, however

complexes with two cordinate bonds are

cisplatin (Pt(NH3)2Cl2) is square planar

what is cisplatin?

how does cisplatin work?

cisplatin has a isomer called

transplatin looks like

what effect does trans-platin have on cancer?

the downside of cis-platin is...

why are transition metal complexes coloured?

the frequency of the light is =

the frequency is related to the

violet is

red is

the colour of the transition metal complexes depends on

what can we use to find the formula of a transition metal complex?

how does a colorimeter determine the formula of the complex?

the results of the colorimeter are plotted on a graph

iron has two stable oxidation states

Which oxidation state of iron is less stable, Fe2+ or Fe3+?

show the equation and the changing oxidation states when Cl reacts with Fe2+

Cl oxidation number drops from 0 to -1, while Fe2+ goes uo from +2 to +3. what is Cl acting as

Potassium manganate (VII) acts as an oxidixing agent in acidic solution and can oxidise

in the reaction between maganese and iron, the maganeses oxidation state goes from

show the half equation of MnO4- going to Mn2+
and Fe2+ going to Fe3+

and then the overall equation

when maganese is titrated against Fe2+ the endpoint is when

the burette in a titration is filled with

what is in the conical flask of the titration?

why is sulfuric acid added to the reducing agent

draw an example of the titration

Fe2+ can also be oxidised by

the endpoint of potassium dichromate and Fe2+ is when the colour changes

the equation for the reaction of potassium dichromate and Fe2+ is

(Cr2O7)-2

what is oxidation state?

what is the colour of the ion?

(CrO4)2-

what is oxidation state?

what is the colour of the ion?

Cr3+

what is oxidation state?

what is the colour of the ion?

Cr2+

what is oxidation state?

what is the colour of the ion?

summary of the chromate reactions