medium , MnO 4
-
+ 3 e - + 2 H 2 O
MnO 2 + 4OH - 14 . Properties of Lanthanoids and Actinoids .
Lanthanoids Actinoids
+ 3 oxidation state is most common
along with + 2 and + 4
Actiniods also show higher oxidation
states such as + 4 , + 5 , + 6 and + 7 .
They are more reactive
Except Promethium , they are non –
radioactive .
They are radioactive
The magnetic propertie s of lanthanoids are less complex than
actinoids .
The magnetic properties of the
actinoids are more complex than
those of the lanthanoids
15 . Mischmetall - It is a well known alloy which consists of a lanthanoid metal (~ 95 %) and iron (~ 5 %) and traces of S , C , Ca and Al . A good deal of mischmetall is used in Mg-based alloy to produce bullets , shell and lighter flint .