Question

According to Bohr's theory, the angular momentum for an electron of $5^{th}$ orbit is:

• A. $2.5h/\pi$
• B. $5h/\pi$
• C. $25h/\pi$
• D. $6h/2\pi$

Answer 1

Answer: (A)

$2.5h/\pi$

Answer:-

According to Bohr's theory, the angular momentum of electron in nth orbit is equal to $\frac{nh}{2\pi }$

For the electron in 5th orbit

angular momentum = $\frac{5h}{2\pi }=\frac{2.5h}{\pi }$