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The d & f Block Elements — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
Question
Many Lanthanoid elements are used to prepare:
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Answer

Many Lanthanoid elements are used to prepare superconducting materials.
Examples include Lanthanum sesquicarbide superconductor $\ce{La_2​C_3}​.$ Gadolinium at very low temperatures becomes highly magnetic and may function as a superconductor.

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