13. Liquids, Solids & Intermolecular Forces
Crystalline Solids
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ANSWERS OPTIONS
A
8
B
9
C
10
D
7
Lanthanum calcium manganate (La0.7Ca0.3MnO3) is a magnetic semiconductor that exhibits colossal magnetoresistance, meaning its electrical resistance changes dramatically in the presence of an applied magnetic field. How many d electrons are there on each La3+ ion in this material? The 4d orbital is lower in energy than the 6s orbital.