# Problem: The distance between the atoms of H−Br is 1.41 Å. What is the distance in meters?Express your answer in meters to three significant figures.The dipole moment for a bond is a measure of the magnitude of polarity (how polar the bond is). Dipole moments can be used to calculate percent ionic character.The dipole moment is symbolized by μ (Greek lowercase "mu") and is equal to the charge, Q, of the atoms (measured in Coulombs, C) times the distance, r, of separation between the atoms (measured in meters, m):μ = Q × rTherefore, the units of dipole moment are Coulomb-meters, C⋅m. Another unit of dipole moment is the debeye, D:1 D = 3.34 × 10−30 C⋅mThe percent ionic character is calculated by dividing the charge, Q, by the charge on a single electron, 1.60×10−19 C⋅m.

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###### Problem Details

The distance between the atoms of H−Br is 1.41 Å. What is the distance in meters?

The dipole moment for a bond is a measure of the magnitude of polarity (how polar the bond is). Dipole moments can be used to calculate percent ionic character.

The dipole moment is symbolized by μ (Greek lowercase "mu") and is equal to the charge, Q, of the atoms (measured in Coulombs, C) times the distance, r, of separation between the atoms (measured in meters, m):

μ = Q × r

Therefore, the units of dipole moment are Coulomb-meters, C⋅m. Another unit of dipole moment is the debeye, D:

1 D = 3.34 × 10−30 C⋅m

The percent ionic character is calculated by dividing the charge, Q, by the charge on a single electron, 1.60×10−19 C⋅m.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Dimensional Analysis concept. You can view video lessons to learn Dimensional Analysis. Or if you need more Dimensional Analysis practice, you can also practice Dimensional Analysis practice problems.