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The ions in crystalline ionic compounds are not free to migrate under moderate electrical potential differences, because the strength of the lattice energy of a crystal imposes a significant energy barrier to motion of the ions.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoUnlike ionic compounds, covalent molecules exist as true molecules. Because electrons are shared in covalent molecules, no full ionic charges are formed. Thus covalent molecules are not strongly attracted to one another. As a result, covalent molecules move about freely and tend to exist as liquids or gases at room temperature.
Wiki User
∙ 11y agoVisual image: Visualise two ions Na+ and Cl- coming together to form a "molecule" each end is still very charged-- another chloride will attach at one end and another sodium at the other-- this process will keep repeating- there will always be a charged "surface" where other ions will attach.
Technical:
Ionic bonds are non ditectional - the ions attract in all direcytions- this will lead to each ion being surrounded by as many other ions of opposite charge will fit as this reduces the energy of the whole system-- (it takes work to move two charges apart- force X distance).
Wiki User
∙ 16y agoBecause a molecule, by definition, has a valence of zero (neutral charge, stable). Also by definition, an ion has a positive or negative charge or valence and is not stable.
Wiki User
∙ 14y agoNo, ionic compounds such as NaCl form into blocks of unit cells. there is no such thing as a molecule of NaCl, only unit cells at best.
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What is the difference between and ionic and covalent bond?
Compounds with covalent bonds form molecules. Compounds with ionic bonds form ionic lattices.
Why are ionic lattices called ionic lattices?
ionic lattice is made of ions & atoms
What kind of chemical bond produces cry stalline lattices?
Ionic bonds: Ionic solids, Covalent bonds in giant covalent molecules such as diamond, silicon dioxide Metallic bonds- metals Crystal lattices are just a regular arrangement of atoms/molecules. They are not unique to any one form of bonding.
What term describes the units that make up substances formed by ionic bonding?
The term that describes the units that make up substances formed by ionic bonding is ions. This may also be referred to as ionic bonds.
Why elements and all compound exist as molecules?
All elements and all compounds do not exist as molecules. As examples, noble gases exist as individulal atoms and ionic compounds form lattices.
Do ionic bonds always produce giant ionic lattices?
Yes. The nature of an ionic bond is that it is non-directional and therfore compounds form lattices rather than discrete molecules.
What is the difference between and ionic and covalent bond?
Compounds with covalent bonds form molecules. Compounds with ionic bonds form ionic lattices.
Why are ionic lattices called ionic lattices?
ionic lattice is made of ions & atoms
What kind of chemical bond produces cry stalline lattices?
Ionic bonds: Ionic solids, Covalent bonds in giant covalent molecules such as diamond, silicon dioxide Metallic bonds- metals Crystal lattices are just a regular arrangement of atoms/molecules. They are not unique to any one form of bonding.
What group of substances do not usually form organized crystal lattices in solid state Ionic compounds metals polar covalent compounds or non-polar covalent compounds?
All of them can form organized crystal lattices.
Why are ionic substances not made up of molecules?
Because molecule was originally defined as a cluster of two or more atoms held together by a covalent bond. So it's not accurate if we say it molecules of ionic compounds. The true sentence is polyatomic ions.
Why do you use the term formula mass instead of molecular mass for ionic compound?
It is impossible to know the mass of a large ionic lattice.
What term describes the units that make up substances formed by ionic bonding?
The term that describes the units that make up substances formed by ionic bonding is ions. This may also be referred to as ionic bonds.
Why is NaCl not a molecule?
Because sodium chloride form giant lattices without a limit between molecules.
Why elements and all compound exist as molecules?
All elements and all compounds do not exist as molecules. As examples, noble gases exist as individulal atoms and ionic compounds form lattices.
Why are there no distinct molecules in an ionic compound?
There are distinct molecules in in substances that form an ionic compound, it is just that when they form an ionic compound (a crystal lattice structure) the pattern in the sturcture is the dominant feature rather than separate molecules.
What form do ionic compounds take?
Giant lattices.
