The dipole moment in [Mn(NH3)6]Br2
Explanation:
- Definition of Dipole Moment:
The dipole moment is a measure of the separation of positive and negative charges in a molecule. It is a vector quantity that points from the negative to the positive charge.
- Analysis of [Mn(NH3)6]Br2:
In the complex compound [Mn(NH3)6]Br2, the central manganese atom is surrounded by six ammonia ligands and two bromide ions. The ammonia ligands are neutral molecules, so they do not contribute to the overall dipole moment of the complex.
- Dipole Moment of Ammonia Ligands:
Each ammonia ligand has a dipole moment due to the difference in electronegativity between nitrogen and hydrogen. However, these dipole moments cancel each other out because the ligands are arranged symmetrically around the central manganese atom.
- Effect of Bromide Ions:
The two bromide ions in the complex have a negative charge each. This results in a net dipole moment in the complex, as the negative charges are not balanced by an equal number of positive charges.
- Direction of Dipole Moment:
The dipole moment of [Mn(NH3)6]Br2 will point from the positive central manganese atom towards the negative bromide ions.
- Overall Dipole Moment:
The overall dipole moment of [Mn(NH3)6]Br2 is a result of the unbalanced charges of the bromide ions in the complex.
In conclusion, the dipole moment in the complex compound [Mn(NH3)6]Br2 is primarily due to the presence of the negatively charged bromide ions, which create a net dipole moment in the molecule.