This is because they have extremely strong covalent bonds that operate in 3D and firmly hold together all the atoms in the lattice structure. Why the bonds are so strong? Probably (and don't quote me here) because the bonds are extremely stable as a result of hybridisation. Consequently, a lot of energy is required to break or even weaken these bonds, hence the exceptionally high melting and boiling points,
Giant covalent structures, such as diamond and graphite, do not have a specific boiling point because their atoms are held together by strong covalent bonds that require high temperatures to break. These structures do not boil in the traditional sense like molecular substances but rather decompose or undergo phase transitions at extremely high temperatures.
Giant covalent structures are substances in which atoms are bonded together by strong covalent bonds in a continuous network, forming a three-dimensional structure. Examples include diamond, graphite, and silicon dioxide (silica). These substances typically have high melting points and are insoluble in most solvents.
The melting points and boiling points of molecular covalent compounds (ones with discrete molecules) are lower than ionic solids and giant molecule covalent compounds like (silica, SiO2) because the forces that attract them together in the solid and the liquid states (van der waals, hydrogen bonding and dispersion forces) are weaker than ionic (or covalent) bonds.
+ High melting and boiling points+ Insoluble in water and organic solvents+ Do not conduct electricity (except when they have free electrons eg graphite)+ Solid at room temperature
A possible compound would be silicon dioxide with giant covalent structure and strong covalent bonds.
It's likely but not definitive. Giant covalent substances like diamond also have high melting and boiling points. To be sure you would have to show that the melted or dissolved substance conducts electricity.
Giant covalent structures, such as diamond and graphite, do not have a specific boiling point because their atoms are held together by strong covalent bonds that require high temperatures to break. These structures do not boil in the traditional sense like molecular substances but rather decompose or undergo phase transitions at extremely high temperatures.
Giant covalent structures are substances in which atoms are bonded together by strong covalent bonds in a continuous network, forming a three-dimensional structure. Examples include diamond, graphite, and silicon dioxide (silica). These substances typically have high melting points and are insoluble in most solvents.
In a covalent bond electrons are shared between the atoms being bonded. Compounds containing covalent bonds are molecular, tend to have a low boiling and melting point, and they do not conduct electricity. This is because the intermolecular forces are weak , van der Waals forces. Nite that giant covalent molecules are in fact high melting.
The melting points and boiling points of molecular covalent compounds (ones with discrete molecules) are lower than ionic solids and giant molecule covalent compounds like (silica, SiO2) because the forces that attract them together in the solid and the liquid states (van der waals, hydrogen bonding and dispersion forces) are weaker than ionic or covalent bonds.
The melting points and boiling points of molecular covalent compounds (ones with discrete molecules) are lower than ionic solids and giant molecule covalent compounds like (silica, SiO2) because the forces that attract them together in the solid and the liquid states (van der waals, hydrogen bonding and dispersion forces) are weaker than ionic (or covalent) bonds.
Yes. All have very strong bonds between the atoms, but much weaker forces holding the molecules together.When one of these substances melts or boils, it is these weak 'intermolecular forces' that break, not the strong covalent bonds within the molecule.
+ High melting and boiling points+ Insoluble in water and organic solvents+ Do not conduct electricity (except when they have free electrons eg graphite)+ Solid at room temperature
The melting points and boiling points of molecular covalent compounds (ones with discrete molecules) are lower than ionic solids and giant molecule covalent compounds like (silica, SiO2) because the forces that attract them together in the solid and the liquid states (van der waals, hydrogen bonding and dispersion forces) are weaker than ionic (or covalent) bonds.
A possible compound would be silicon dioxide with giant covalent structure and strong covalent bonds.
No, giant covalent substances like diamond or graphite do not dissolve in water because they have strong covalent bonds that are not easily broken by water molecules. Their rigid structure and intermolecular forces also prevent them from dissolving in water.
It depends on the type of structure; simple covalent structures (like water) generally have low boiling points, while giant covalent structures (like diamond) have high boiling points.