It is unlikely that many people, other than students of chemistry, have heard of scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. Together, this group...
from Times of India Opinion https://ift.tt/7cOXCHq
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