In 'H-F' bond electronegativity difference is '1.9'. What is the type of this bond?
Correct answer: A. Polar covalent bond
- A. Polar covalent bond
- B. Non-polar covalent bond
- C. Pi (π) bond
- D. Co-ordinate covalent bond
Explanation
Fluorine is the most electronegative element with an electronegativity of 4.0 on the Pauling scale, while hydrogen has an electronegativity of 2.1. Due to this significant difference in electronegativity, the electron pair in the H-F bond is pulled towards fluorine, creating a partial negative charge on fluorine and a partial positive charge on hydrogen. Thus creating a polar covalent bond.
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