Which bond is formed first between two atoms?
Correct answer: A. Sigma bond
- A. Sigma bond
- B. Pi bond
- C. Double bond
- D. Triple bond
Explanation
A sigma bond is a type of covalent bond formed by the head-on overlap of atomic orbitals. It's the strongest type of covalent bond and is often formed between two s orbitals a p orbital. Sigma bonds are usually formed first when two atoms approach each other to create a covalent molecule.
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About Chemical Bonding
Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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