Question

The 14 elements have been placed in VIth period and third group of the periodic table. they are called:

• A. alkaline earth metals
• B. inert gases
• C. alkali metals
• D. rare-earth metals

Answer 1

The correct option is D rare-earth metals

Answer D

Those elements placed in the 6th period and the 3rd group are called rare earth metals. The rare earth elements are all metals, and the group is often referred to as the "rare earth metals." These metals have many similar properties, and that often causes them to be found together in geological deposits. They are also referred to as "rare earth oxides" because many of them are typically sold as oxide compounds.
$Note:$ Sc and Y also refer to rare earth metals.