transition metals Flashcards
1
Q
define a transition metal
A
forms at least one stable ion with a partially filled d sublevel
2
Q
name the key features of transition metals
A
- form complex ions
- are coloured
- are catalysts
- have variable oxidation states
3
Q
what is the chelate effect
A
the increase in entropy when a monodentate ligand is substituted by a bidentate or multidentate ligands
4
Q
what makes a trans isomer
A
the alike ligands are opposite one another
5
Q
what makes a cis isomer
A
the alike ligands are next to each other
6
Q
explain how a transition metal shows colour
A
-the d orbital splits
-d e- are promoted using energy from light, to bridge the gap =ΔE
-the colours/ wavelengths not absorbed are what is transmitted
7
Q
A
