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bd40bc7c7a Learn more . The carbon atom is called tetravalent because it forms 4 covalent bonds. Each carbon then requires three more electrons to acquire a stable configuration of the nearest noble gas (neon). A carbon atom completes its octet only by sharing its valence electrons with other atoms. Make Public Upload Failed Image Detail X Sizes: Medium Original Title: Please enter valid title for resource Description: Please enter description to make resource public Type: Activity Attachment Assessment Audio Classwork Critical Thinking Handout Homework Image Interactive Object Lab Lesson Plan Notes Presentation Project Reading Rubric Starter/Do now Study Guide Syllabus Test/Quiz Video Web Worksheet Published . Carbon dioxide molecule: Each carbon atom has four electrons in its outermost shell and each oxygen atom has six electrons in its outermost shell. Thus, it requires four more electrons to acquire a stable noble gas configuration. This article does not cite any sources. Two carbon atoms share two electrons each with hydrogen atoms to form single bonds. An example is methane (CH4): the tetravalent carbon atom forms a covalent bond with four hydrogen atoms.