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Covalent bonds are bonds in which the valence electrons are shared, note the "co", meaning shared or together, in covalent, valent meaning electrons. Ionic bonds occur when the electronegativity difference between two given elements is greater than 2.7, resulting in an electron being removed entirely from the element with a lower electronegativity. The resulting increase in charge for the less electronegative element and decreased charge for the more electronegative element causes the two elements to be so strongly attracted to each other that is is rather difficult to separate the two.

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14y ago
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13y ago

Electrons are shared in covalent bonds while electrons are transferred in ionic bonds.

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12y ago

covalent bonds are where the electrons are shared (usually with two nonmetals) and ionic bonds are where the electrons have been fully transferred (usually with a metal and a nunmetal)

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Q: How do covalent bonds differ from ionic ones?
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What 2 types of bonds that form compounds?

The two main types of chemical bonds are the ionic bondand the covalent bond. Each is discussed here on WikiAnswers, and you'll find links below to the related questions.


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All elements which have distinct multiatomic molecules are covalent. (Noble gases have only one atom per molecule, so no bonds; metals are ... metallic.) If they were ionic, how would the iodine atoms "know" which ones were supposed to be positive and which ones were supposed to be negative?


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The ones that do not carry electricity are ones that covalent.


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A crystalline solid that is electrically neutral MOST likely has bonds?

Ionic bonds. All chemical compounds are electrically neutral, in that they do not posess an overall electrstaic charge. Crystalline solids could be either ionic or covalent. The most likely ones to be encountered in a laboratory or in the home are ionic solids. Most ionic compounds are crystalline solids at normal temperature. Ionic solids are generally the union of a metal and a non-metal. Examples include salt (sodium chloride), fluorite (calcium fluoride), and pyrite (iron sulfide). Ionic compounds are electrically neutral because the charges of their ions cancel out. So the answer is ionic bonds.


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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.


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