An electron makes transition inside a hydrogen atom. The orbital angular momentum of the electron may change by

Question

An electron makes transition inside a hydrogen atom. The orbital angular momentum of the electron may change by (A)  h  (B)  (h/3π )  (C)  (h/2π )  (D)  (h/4π )

Tardigrade Admin · Accepted Answer

Let electron jumps from n1 arrow n2 So, Δ L=(n2-n1)=(h/2 π) (According to Bohr's quantisation rule) Since, n1 and n2 are integers (n1, n2>1), so n2-n1 is also an integral value and hence, Δ L must be an integral multiple of (h/2 π).

Q. An electron makes transition inside a hydrogen atom. The orbital angular momentum of the electron may change by

$h$

$\frac{h}{3 π}$

$\frac{h}{2 π}$

$\frac{h}{4 π}$

Q. An electron makes transition inside a hydrogen atom. The orbital angular momentum of the electron may change by

h

3πh​

2πh​

4πh​

Let electron jumps from n1​→n2​ So, ΔL=(n2​−n1​)=2πh​ (According to Bohr's quantisation rule) Since, n1​ and n2​ are integers (n1​,n2​>1), so n2​−n1​ is also an integral value and hence, ΔL must be an integral multiple of 2πh​.

$h$

$\frac{h}{3 π}$

$\frac{h}{2 π}$

$\frac{h}{4 π}$