15
its in the Lanthanide series
57
Earth
They are used for making alloys
The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.
The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.
the two groups of metals is the Lanthanide series and the Actinide series.
elements 57 - 70.
The lanthanide series.
There is no element with the atomic symbol of "R"
The Lanthanide Series consists of metals. They are known for their high reactivity and ability to form colorful compounds due to their unique electron configurations.
The lanthanide and actinide series. Trait of lanthanide: Lanthanum, element 57. Trait of actinide: actinium, element 89.