<Tr> <Td> Melting point </Td> <Td> 747 ° C (1,377 ° F; 1,020 K) (anhydrous) 36 ° C (97 ° F; 309 K) (dihydrate) decomposes </Td> </Tr> <Tr> <Td> Boiling point </Td> <Td> 1,390 ° C (2,530 ° F; 1,660 K) </Td> </Tr> <Tr> <Td> Solubility in water </Td> <Td> 71.35 g / 100 mL (− 20 ° C) 79.52 g / 100 mL (0 ° C) 94.32 g / 100 mL (25 ° C) 104.9 g / 100 mL (40 ° C) 116.2 g / 100 mL (100 ° C) </Td> </Tr> <Tr> <Td> Solubility </Td> <Td> Soluble in alcohol, liquid ammonia, pyridine, hydrazine, SO, amine Insoluble in acetone, acetonitrile </Td> </Tr>

What kind of bond is present in nabr