| Promethium
in the Lanthanide Series and all
the elements in the Actinide Series except for Thorium,
Protactinium, & Uranium
are called trans-uranium since they do not occur naturally in nature.
The Rare Earth matter elements are:
|
Lanthanide Series |
Actinide Series |
|
|
|
|
APromethium
in the Lanthanide Series
and all the elements in the Actinide Series except for AThorium,
AProtactinium,
& AUranium
are called
trans-uranium since
they do not occur naturally in nature.
The Rare Earth Amatter elements are:
|
Lanthanide Series |
Actinide Series |
|
|
|
|