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Answered 2012-10-25 19:13:45

Ionic compounds generally have high melting points and boiling points with some notable exceptions e.g. NH4Cl which sublimes.

Metals also generally have high melting points and boiling points, again there are some notable exceptions Mercury a liquid at room temperture, gallium which melts in your hand.

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Yes, an ionic bond has a higher melting and boiling point than a covalent bond ionic bond>covalent bond>metallic bond>hydrogen bond>vanderwaals.....


Ionic compounds have higher melting and boiling points than moleculars compounds. They do not vaporize as easy,


As a generalization, the melting and boiling points of ionic compounds are substantially higher than the corresponding characteristics of covalent compounds. However, there are some ionic compounds with lower melting points than many covalent compound. Some substituted tetra-ammonium salts in particular are liquid at room temperature. There are also some covalent compounds such as diamond with higher melting points than most ionic compounds.


As a generalization, the melting and boiling points of ionic compounds are substantially higher than the corresponding characteristics of covalent compounds. However, there are some ionic compounds with lower melting points than many covalent compound. Some substituted tetra-ammonium salts in particular are liquid at room temperature. There are also some covalent compounds such as diamond with higher melting points than most ionic compounds.


In general, ionic compounds have higher conductivity, melting points, and boiling points than molecular compounds.Let me again stress that in general.


Compound with ionic bonds have higher melting and boiling points.


as ionic bond is chemically very strong it posses high melting and boiling point


ionic solids having highly melting and boiling points


Generally the ionic molecules has a higher melting point.


Metallic: melting point @ 63, boiling point @ 760, properties: soft, silvery, solid, and conductor as a solid. Covalent: melting point @ -101, boiling point @ -34.6, properties: greenish yellow gas and not a good conductor.


Ionic compounds have higher melting and boiling points than molecular compounds do. The electronegativity difference in ionic compounds makes their bond much stronger.


Generally ionic substances have high melting and boiling points.


Ionic solids have non-metallic and metallic elements, their melting points are high, and they conduct no electricity.


due to the strong electrostatic force of attraction between the positive cations and negative anions in ionic compounds



Ionic compounds have higher boiling points than molecular compounds because the bonds that hold them together are stronger and so need more energy to break them.


They have high melting points and very high boiling points




The structure of a compound will dictate what intermolecular forces hold the molecules together. The stronger these forces, the higher will be the boiling point.


Ionic compounds have higher boiling points than molecular compounds because the bonds that hold them together are stronger and so need more energy to break them.


No. The electronegativity difference is 0.67, giving Ni - S bonds 11% ionic character. The bonds have substantial covalent character, instead. The high melting and boiling points of NiS can be attributed, not to the ionic character, but to the network arrangement of atoms. Networks, whether they be predominately ionic or predominately covalant, have higher melting and boiling points.


Melting and boiling points are determined by the strength of the intermolecular forces present in the compound. The stronger the intermolecular forces, the higher the melting and boiling points. There are four types of intermolecular forces, from lowest strength to highest: London dispersion forces, dipole-dipole, hydrogen bonding, and ion-dipole. Ionic compounds will have ion-dipole intermolecular forces. Because this is the strongest intermolecular force, ionic compounds will also have the highest melting and boiling points.



molecular compounds have a lower melting and boiling point than ionic



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