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You can tell if a bond is ionic or covalent based on the atoms present. Ionic bonds are bonds between a metal and nonmetal whereas covalent bonds are bonds between two nonmetals. Knowing this, you can determine whether a bond is ionic or covalent.
The difference is their electronegativity. If the electronegativity between the two atoms is more than 2.5, the bond is ionic. If the electronegativity between the two atoms is less than 1.5, the bond is covalent. Between 1.5 and 2.5, the bond has ionic and covalent components.
An electronegativity difference of more than 2.5 indicates that the bond is ionic. An electronegativity difference less than 1.5 indicates that the bond is covalent. An electronegativity difference between 1.5 and 2.5 indicates that the bond has ionic and covalent character.
Ionic bonds are usually between a metal and a nonmetal. Covalent bonds, on the otherhand, are typically between two nonmetals. Another way to differentiate is by looking at the electronegativity difference. If the electronegativity difference is greater than 2, then it is an ionic bond. If the electronegativity difference is less than 1.5, then it is a covalent bond.
A main distinction between covalent and ionic bonds are that ionic bonds are between a metal and nonmetal. Covalent bonds are between two nonmetals. Additionally, the EN difference for ionic bonds are greater than 2.5 and lower than 1.5 for covalent bonds.
Donavin Collins 3B wrote:How can you tell if a bond is ionic or covalent?
ionic bonds are generally between metals and nonmetals and covalent bonds are between nonmetals. However, the bond type is ultimately determined by the electronegativity difference between the two atoms.
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