Which of the following is most likely to have a crystalline structure

Which of the following statements is not true? • a. covalent compounds have low melting and boiling points. • ob. covalent bonds between atoms of a compound are relatively weak compared to bonds between molecules. • c. covalent bonds occur between nonmetals. • d. covalent compounds are often gases or liquids.

In which reaction is precipitation occurring?

How might this scientific phenomena be explained? a paper clip floats on water.