Question

According to Bohr model, magnetic field at centre (at the nucleus) of a hydrogen atom due to motion of electron in the n^th orbit is proportional to –

• A. 1/n³
• B. 1/n⁵
• C. n⁵
• D. n³

Answer 1

Answer: (B)

1/n⁵

Answer 2

B = $\frac{µ_{0}i}{2r}$; magnetic field at centre of hydrogen atom i.e. at nucleus.

i = $\frac{e}{T}$ = ef = a z²/n³

r a n²/Z

B a i/r a Z³/n⁵

B a 1/n⁵