If the sharing of an electron pair is unequal and the atoms have an electronegativity difference of 1.4 to 1.6, then the type of bond formed is called:
Correct answer: B. Polar covalent
- A. Ionic
- B. Polar covalent
- C. Non-polar covalent
- D. Metallic
Explanation
The bond between two atoms is non-polar covalent if the electronegativity difference between them is zero or less than 0.5. The bond between two atoms is polar covalent if the electronegativity difference between them is 0.5 to 1.6. The bond between two atoms is equally covalent and ionic if the electronegativity difference is 1.7. The bond is ionic if the E.N. difference is greater than 1.7.
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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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