Sodium
Graphite is the softest among the substances listed. Diamond is the hardest substance, followed by sodium and plaster.
Graphite has a higher boiling point than sodium chloride because graphite consists of covalently bonded carbon atoms arranged in layers. These layers are held together by strong covalent bonds, which require more energy to break compared to the ionic bonds in sodium chloride. Sodium chloride has a lower boiling point because it is made up of ionic bonds between sodium and chlorine ions, which are weaker than covalent bonds.
Well, honey, sodium chloride (good ol' table salt) and diamond are definitely not isomorphic. Sodium chloride has a crystal structure composed of alternating sodium and chloride ions, while diamond is made up of carbon atoms arranged in a tetrahedral lattice. So, they may both be sparkly in their own way, but they're as different as night and day.
A compound is formed from 2 or more chemical elements linked by chemical bonds; and sodium chloride has sodium and chlorine linked by an ionic bond. And sodium chloride (NaCl) is a chemical compound.
the bonds between the atoms of carbon in diamonds are much stronger than the atoms in Sodium Chloride. Each carbon atom in diamond is covalently bonded to 4 other carbon atoms making it very difficult to boil/melt. Whereas sodium chloride is in the structure of an ionic lattice with strong electrostatic forces of attraction between the negatively charged chloride atoms and the positively charged sodium atoms; this is still strong but not as much as diamond.
Sodium ions have positive charge whereas chloride ions have negative charge. They alternatively form electrostatic bonds to create the NaCl lattice which is ionic.
When sodium chloride dissolves in water, it dissolves to form the chloride and sodium ions, therefore forming a conducting solution.
Sodium chloride is soluble in water because both have polar molecules; but not in hexane becuse it is nonpolar.
The melting point of diamond is higher than that of sodium chloride because diamond is a covalent network solid, with strong covalent bonds between carbon atoms throughout its structure. Sodium chloride, on the other hand, is an ionic solid held together by weaker electrostatic forces between sodium and chloride ions. The stronger covalent bonds in diamond require more energy to break, resulting in a higher melting point.
Sodium chloride in liquid phase and sodium chloride in water solution are electrolytes, containing ions Na+ and Cl-.
Sodium chloride has two atoms in the formula unit (NaCl): sodium and chlorine.
Sodium chloride is a compound.