Question

Which of the following electronic transitions requires that the greatest quantity of energy be absorbed by a hydrogen atom?

• A. n = 1 to n = 2
• B. n = 2 to n = 4
• C. n= 3ton= 6
• D. n = 1 to n = $\infty$

Answer 1

Answer: (D)

$\Delta \mathrm{E}=cons\tan t$ $\left[\frac{1}{{n_1}^2}-\frac{1}{n_2^2}\right],$ Transition with maximum valu e of $n_2$ and least value of $n_1$ will absorb greatest quantity of energy $(n=1ton=\infty )$