period 3

Question 1

trend of melting point from sodium to aluminum

Answer 1

the melting point increases, as the strength of the metallic bonds increase

Question 2

which has the highest melting point in period 3

Answer 2

silicon, because it has a macromolecular structure, and is giant covalent, in which it has the most van dermal forces between molecules, requiring the most energy

Question 3

what do the melting points of non metals depend on

Answer 3

the size of the van der weal forces between the molecules

Question 4

why does sulfur have a higher melting point than phosphorus

Answer 4

sulfur naturally exists as s8 while phosphorus exists as p4. there will be more van der weal forces between the molecules in sulfur