Question

According to Bohr atom model, in which of the following transitions will the frequency be maximum?

• A. $n =4$ to $n =3$
• B. $n =2$ to $n =1$
• C. $n =5$ to $n =4$
• D. $n =3$ to $n =2$

Answer 1

Answer: (B)

$\Delta E =13.6\left[\frac{1}{ n _{1}^{2}}-\frac{1}{ n _{2}^{2}}\right]= hv$
It is maximum if $n _{1}=1$ and $n _{2}=2$
$n =5...........................-0.544 eV$
$n =4 .............................-0.850 eV$
$n =3...............................-1.511 eV$
$n =2 ...............................-3.4 eV$
$n =1..................................-13.6 eV$