Question

Lanthanides along with which two elements are sometimes called 'rare earth elements'?

• A. Molybdenum and Palladium
• B. Ruthenium and Zirconium
• C. Yttrium and Scandium
• D. Vanadium and Niobium

Answer 1

Answer:

C. Yttrium and Scandium

• The term 'rare earth elements' is commonly used to refer to a group of 17 chemically similar metallic elements. • These include the 15 lanthanides (elements with atomic numbers 57 through 71), plus scandium (Sc) and yttrium (Y).