How many valence electrons does the carbon atom have?

Study for the Medical Chemistry Test. Explore multiple choice questions with hints and explanations. Get exam-ready with engaging quizzes and comprehensive study materials.

Multiple Choice

How many valence electrons does the carbon atom have?

Valence electrons are the electrons in the outermost electron shell that participate in bonding. For carbon, the atomic number is 6, giving an electron configuration of 1s2 2s2 2p2. The outermost shell is the second shell (n = 2), which contains 2 electrons in the 2s orbital and 2 in the 2p orbitals, for a total of four valence electrons. This is why carbon is tetravalent and tends to form four covalent bonds, enabling its versatile chemistry in organic compounds. The other numbers don’t fit carbon because 2 would imply only two outer electrons, typical of some group-2 elements; 6 would correspond to an element like oxygen in group 16; and 8 would indicate a full octet as seen in noble gases like neon.

Valence electrons are the electrons in the outermost electron shell that participate in bonding. For carbon, the atomic number is 6, giving an electron configuration of 1s2 2s2 2p2. The outermost shell is the second shell (n = 2), which contains 2 electrons in the 2s orbital and 2 in the 2p orbitals, for a total of four valence electrons. This is why carbon is tetravalent and tends to form four covalent bonds, enabling its versatile chemistry in organic compounds.

The other numbers don’t fit carbon because 2 would imply only two outer electrons, typical of some group-2 elements; 6 would correspond to an element like oxygen in group 16; and 8 would indicate a full octet as seen in noble gases like neon.

More practice questions