transition metals Flashcards
4 main charactics of tm
form complex ions with ligands
form coloured complexes
varaible oxidation states
show cataltic activity
def of tm
are elements that form one or more stable ions with a partially filled d sub shell
what metals are not tm metals
scanduim and zinc
ligand def
a speicies with a lone pair of electrons that form a cordant bond with a tm
what is a monodenate ligand
forms one cordant bond per speicies
give an exsample of mondentate ligands
cl, h20, NH3, CN
give an exsample of a multidentate ligand
EDTA4-
give an exsample of a bidentate ligand
ethane 1-2diameme
what is a cis isomers in monodentate
on the same side of the molelucle
trans isomerism
An ion directly separtes them(opposite sides)
where does optical isomerism occur
occurs in bidenate ligands
opticla isomerisms are
non sumposable
what factors effects delta E
oxidation state
co-ordination number
type of ligand
why do transition metals show colour
d orirtals have the same energry level
when ligands attach the d orbitals split forming delta E
Certain frequencies of visible light cause the promotion of an exiceted electron to a higher energry
from lower higher energry level
AS IT DOES THIS SOME OF THE FREQUENICIES OF VISIBLE LIGHT ARE ABSORBED .
REST IS REFLECTED CREATIG COLOUR
why is their colour in tm
they have partailly fill d subshells
