Question

The dipole moment in HF molecule may be represented as A) a. H---->--F b.H<----F c. h-f d.H-------f

Answer 1

Answer:

A

Explanation:

Because Fluorine has higher elecctronegetivity than hydrogen.

Answer 2

Answer:

The dipole moment in HF molecule can be represented as H-------> F.

Therefore, option (a) is correct.

Explanation:

• A dipole moment is the product of the distance between positive and negative charges and the magnitude of the charge.
• Dipole moment is denoted by ‘µ’.
• The bond dipole moment that arises due to the difference in the electronegativities of two atoms in a chemical bond.
• Mathematically, we can calculate dipole Moment (µ) = Charge × distance of separation.
• The bond dipole moment (μ) is a vector quantity and its direction parallel to the axis of bond.
• In chemistry, we draw the arrows in order to represent dipole moments. An arrow begin at the positively charged centre or less electronegative atom and end at the negatively charged or more electronegative atom.
• In the given HF molecule, hydrogen is less electronegative and fluorine is more electronegative atom. therefore, the direction of arrow from H to F.

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