Carbon-based organic molecules have how many valence electrons?

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Multiple Choice

Carbon-based organic molecules have how many valence electrons?

Valence electrons are the electrons in the outermost shell that participate in bonding. Carbon has four electrons in its outer shell (2 in the 2s orbital and 2 in the 2p orbitals), so it has four valence electrons. That four-electron valence allows carbon to form up to four covalent bonds, which is why carbon-based organic molecules can build so many different structures—chains, branches, rings, and more. The other numbers don’t describe carbon’s starting valence: two would align with what helium has, six with oxygen’s valence, and eight reflects an octet achieved after bonding, not carbon’s initial valence electrons.

Valence electrons are the electrons in the outermost shell that participate in bonding. Carbon has four electrons in its outer shell (2 in the 2s orbital and 2 in the 2p orbitals), so it has four valence electrons. That four-electron valence allows carbon to form up to four covalent bonds, which is why carbon-based organic molecules can build so many different structures—chains, branches, rings, and more. The other numbers don’t describe carbon’s starting valence: two would align with what helium has, six with oxygen’s valence, and eight reflects an octet achieved after bonding, not carbon’s initial valence electrons.

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