Question 61: Atoms & Nuclei

Question

If an electron in hydrogen atom jumps from an orbit of level $$n=3$$ to an orbit at level $$n=2$$, emitted radiation has a frequency of
(R = Rydberg's constant and c = velocity of light)

Accepted Answer

When an electron jumps from orbit $$n_i$$ to $$n_f$$, then the frequency of emitted photon is
$$
u  = cR\left( {{1 \over {n_f^2}} - {1 \over {n_i^2}}} ight)$$
Here, $${n_i} = 3,{n_f} = 2$$
$$ \Rightarrow 
u  = cR\left[ {{1 \over {{{(2)}^2}}} - {1 \over {{{(3)}^2}}}} ight] = {{5Rc} \over {36}}$$

Answer

$$\frac{3Rc}{27}$$

Answer

$$\frac{Rc}{25}$$

Answer

$$\frac{8Rc}{9}$$

Answer

$$\frac{5Rc}{36}$$

Atoms & Nuclei

If an electron in hydrogen atom jumps from an orbit of level $n=3 to an orbit at level n=2$, emitted radiation has a frequency of (R = Rydberg's constant and c = velocity of light)

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