The dipole moment of HBr is 2.60 × 10-30 cm and the interatomic spacing is 1.41 mathringA . What is the per cent ionic character of HBr ?

Question

The dipole moment of HBr is 2.60 × 10-30 cm and the interatomic spacing is 1.41 mathringA . What is the per cent ionic character of HBr ? (A) 50% (B) 11.5% (C) 4.01% (D) 1.19%

Tardigrade Admin · Accepted Answer

Theoretical value of dipole moment of 100 % ionic character =e × d =(1.6 × 10-19 C )(1.41 × 10-10 m ) =2.26 × 10-29 Cm Observed value of dipole moment =2.60 × 10-30 Cm ∴ Percent ionic character =( text observed value / text theoretical value ) × 100 =(2.60 × 10-30/2.26 × 10-29) × 100 =11.5 %

Q. The dipole moment of HBr is 2.60×10−30cm and the interatomic spacing is 1.41A˚. What is the per cent ionic character of HBr ?

50%

11.5%

4.01%

1.19%

Theoretical value of dipole moment of 100% ionic character =e×d =(1.6×10−19C)(1.41×10−10m) =2.26×10−29Cm Observed value of dipole moment =2.60×10−30Cm ∴ Percent ionic character = theoretical value observed value ​×100 =2.26×10−292.60×10−30​×100 =11.5%

Q. The dipole moment of $H B r$ is $2.60 \times 1 0^{- 30} c m$ and the interatomic spacing is $1.41 \overset{˚}{A}$ . What is the per cent ionic character of $H B r$ ?