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Is CBr4 polar or nonpolar?
CBr4 is nonpolar because its four equivalent C–Br bonds point symmetrically toward the corners of a tetrahedron.
Carbon Tetrabromide · tetrahedral
The molecule in space
Drag to turn the molecule. Show angles to read the model geometry.
01 / MODEL RECORDPubChem 3D coordinates. Atom sizes and bond thickness are illustrative.How model data is used ↗
Why CBr4 is nonpolar
Carbon sits at the center of four identical bromine substituents. Any C–Br bond dipole has matching contributions in the other three directions, making the vector sum zero for the isolated molecule.
What to notice
CBr4 follows the same cancellation pattern as CCl4 and CF4. Changing the halogen changes individual bonds, not the tetrahedral symmetry.
Common questions about CBr4
- 01
What does the Lewis structure of CBr4 show?
Carbon makes four C–Br single bonds. Every bromine has three lone pairs and carbon has none.
- 02
What is the molecular geometry of CBr4?
CBr4 has a tetrahedral molecular geometry. The 3D model shows representative bond angles of 109.5°. These angles come from the displayed model coordinates.
- 03
What is the molar mass of CBr4?
CBr4 has an approximate molar mass of 331.63 g/mol, calculated from its formula using abridged standard atomic weights. Natural isotope variation can change the last digits.