A Doubly Charged Ion (Charge 2e) with Velocity 6

Multiple Choice

A doubly charged ion (charge 2e) with velocity 6.9 × 10⁶ m/s moves in a circular path of diameter 60.0 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion? (e = 1.60 × 10^-19C)

A) 11 × 10^-27 kg
B) 6.7 × 10^-27 kg
C) 4.5 × 10^-27 kg
D) 3.3 × 10^-27 kg