Atoms of different isotopes of the same element differ in their total number
of

Answer; carbon monoxide (co);

It would be true sodium reacts with water in a violent way 

Answer    "a salt" would be the best answerexplanationsalts can be defined as ionic compounds that are neither acids nor bases. nacl is an example of a salt, and its ionic.an enzyme is an organic compound which is covalently bonded, not ionically bonded.acids are generally held together by covalent bondsan element does not need any bonds to exist