Question

Calculate the radius of the first Bohr orbit in the hydrogen atom. 

[ε₀ = 8.85 × 10^-12 C² /N∙m² e = 1.6 × 10^-19 C, m(electron) = 9.1 × 10^-31 kg, h = 6.63 × 10^-34 J∙s]

Answer 1

Data : ε₀ = 8.85 × 10^-12 C² /N∙m² e = 1.6 × 10^-19 C,

h = 6.63 × 10^-34 J∙s, m = 9.1 × 10^-31 kg

The radius of a Bohr orbit,

This is the radius of the third Bohr orbit in a hydrogen atom.