Question

What are rare earth metals and transurinic metals

Answer 1

Answer:

The rare-earth elements, also called the rare-earth metals or (in context) rare-earth oxides, or the lanthanides (though yttrium and scandium are usually included as rare-earths) are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals.[1] Scandium and yttrium are considered rare-earth elements because they tend to occur in the same ore deposits as the lanthanides and exhibit similar chemical properties, but have different electronic and magnetic properties.[2][3]

Answer 2

Explanation:

The 14 elements from cerium (Z = 58) to Lutensium are called rare earth elements because their abundance in the earth crust is very less. ... The elements after uranium (Z = 92) in the periodic table are called transuranic elements. Thses elements do not occur in the nature. They are man made, synthetic and artificial.