<Tr> <Td> Lattice constant </Td> <Td> a = 0.312 nm, c = 0.473 nm </Td> </Tr> <Tr> <Th_colspan="2"> Thermochemistry </Th> </Tr> <Tr> <Td> Heat capacity (C) </Td> <Td> 77.03 J / mol K </Td> </Tr> <Tr> <Td> Std molar entropy (S) </Td> <Td> 64 J mol K </Td> </Tr>

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