<Tr> <Td_colspan="2"> Purple glow in its plasma state </Td> </Tr> <Tr> <Th_colspan="2"> General properties </Th> </Tr> <Tr> <Th> Appearance </Th> <Td> colorless gas </Td> </Tr> <Tr> <Th> Standard atomic weight (A) </Th> <Td> (7000100784000000000 ♠ 1.007 84, 7000100811000000000 ♠ 1.008 11) conventional: 7000100800000000000 ♠ 1.008 </Td> </Tr>

Is dihydrogen oxide an element compound or mixture