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Carbon has its four valence electrons in the second electron shell, while Silicon has them in the third. This means that they are farther away from the positively charged nucleus and therefore less strongly bound.

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11y ago
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13y ago

Bond strength is measured by the energy required to disrupt it, which equals the energy released when the bond is made. A simple estimate is provided by melting the material. Quartz, the primary compound of Si and O, melts at 1670 degrees C or about 1940 K. Pure carbon, whether diamond or graphite, melts at about 3600 degrees C or about 3870 K. Thus the C-C bond is about twice as strong as the Si-O bond.

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Q: Which is stronger c-c bond or si-o bond?
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