The initial statement in this question is false, carbon atoms do share electrons with other carbon atoms.
An example of when they do share electrons can be found in diamond, where the carbon atoms form a tetrahedral shape to form one of the strongest naturally occurring substances..
This question seems a bit unclear. Perhaps it meant something like: "how many electrons can be shared with carbon atoms?" Anyway, a carbon atom can share 4 electrons with other atoms, including other carbon atoms.
One carbon atom will share four electrons.
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Carbon and silicon are two elements that share four electrons while bonding. Occasionally, in compounds like sulfur tetraoxide, elements other than in group 14 also share exactly four electrons.
Carbon has four valence electrons in its outermost orbit which indicate it need four further electrons to complete its valence according to octect rule. It is also not possible for Carbon to remove all of its four valence electrons for the same cause of obeying octect rule. Hence the only option left for carbon is make covalent bonds with another carbon or any other element whose electrons are available for making a covalent bond. That's why most of the compounds of carbon are covalent.
a carbon atom can share electrons with up to four other atoms.
This question seems a bit unclear. Perhaps it meant something like: "how many electrons can be shared with carbon atoms?" Anyway, a carbon atom can share 4 electrons with other atoms, including other carbon atoms.
One carbon atom will share four electrons.
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Carbon would share electrons with the oxygen to form carbon monoxide or carbon dioxide.
Carbon has 4 valence electrons. It needs four more to form the octet. So carbon will share four electrons
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Atoms gain lose or share valence electrons in a way that makes the atoms more stable
The atomic number of carbon is six. Carbon has four electrons in the outer orbit. It can share the four electrons with other elements. Carbon can form the chain with other carbon atoms. Because of this unique property of the carbon atom, you have the entire organic chemistry based on this atom. You can not imagine the world without this atom.
Carbon has four electrons in its valence shell (outershell). Since this energy shell can hold eight electrons, each carbon atom can share electrons with up to four different atoms. Carbon can combine with other elements as well as with itself. This allows carbon to form many different compounds.