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A carbon atom needs four electrons to have a full outer shell so I guess it can form a maximum of four bonds.
Nitrogen can form a maximum of three single covalent bonds, one with each of its three 2p electrons.
Bromine (Br) can form a single covalent bond with a neighboring atom in a compound.
A molecule of ethene contains 6 covalent bonds, namely 5 sigma bonds and a pi bond.
maximum of five single covalent bonds as in PCl5
Nitrogen can form three covalent bonds when it has no negative charge.
Carbon will form four covalent bonds, nitrogen will form three covalent bonds, oxygen will form two covalent bonds, and hydrogen will form one covalent bond. Click on the related link to see a diagram showing the structure of an amino acid.
Carbon can form four covalent bonds at most, such as in methane.
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Carbon form generally covalent bonds; ionic bonds are rare.
Sulfur can form two covalent bonds as in H2S, and can form 6 as in SO3. In elemnatl allotropes of sulfur which are covalent bonded, many are cyclic compounds the number of covalent onds is 2.
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A single carbon atom can form a maximum of four covalent bonds. This is because carbon has four valence electrons available for bonding.