chemistry

State of phosphorus: solid

state of sulfur:solid

TREND OF MELTING POINT FOR ELEMENTS IN PERIOD 3:
Melting points generally increase going from sodium to silicon, then decrease going to argon.
melting involves breaking up the lattice structure of a solid. hence, the melting point of an element indicates the strength of forces holding the particles together in the crystal lattice.

melting point increases from Na to Al as the strength of the metallic bond increases,

Si has a very high melting point due to its giant covalent structure. A large amount of energy is required to break the strong covalent bonds in Si.

P, S, Cl and Ar have lower melting points since they are simple molecules with weak van der Waals' forces between molecules.