An electron has a mass of 9.1 × 10-31 kg. It revolves round the nucleus in a circular orbit of radius 0.529 × 10-10 m at a speed of 2.2 × 106 ms-1. The magnitude of its angular momentum is
1
1.06 × 10-34 Kgm2 s-1
2
1.06 × 10-24 Kgm2 s-1
3
2.06 × 10-34 Kgm2 s-1
4
2.06 × 10-24 Kgm2 s-1