Question

Bohr radius of hydrogen atom is

• A. $0.529\times {10}^{-8}m$
• B. $0.529\times {10}^{-10}m$
• C. $5.29\times {10}^{-8}m$
• D. $5.29\times {10}^{-10}m$

Answer 1

The correct option is B $0.529\times {10}^{-10}m$

The value of Bohr radius is given by

$a_0=4\pi {\epsilon }_0{h}^2/4{\pi }^2{m}_e{e}^2$

where,

e = where elementary charge

$m_e$ = mass of stationary electron.

h = Planck's constant.

${ϵ}_0$ = permittivity of free space.

Now putting all the necessary values, we get,

$a_0=0.529\times {10}^{-10}m$.