Toddler deciphers Lanthanides and Actinides chem symbols
43 months; Lanthanides: La=lanthanum, Ce=cerium, Pr=praseodymium, Nd=neodymium, Pm=promethium, Sm=samarium, Eu=europium, Gd=gadolinium, Tb=terbium, Dy=dysprosium, Ho=holmium, Er=erbium, Tm...
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Sat, 18 Aug 2007 06:28:11 -0400
Found on Truveo