Atoms And Nuclei Question 102
Question: The energy of hydrogen atom in its ground state is ? 13.6 eV. The energy of the level corresponding to the quantum number n is equal 5 is [KCET (Engg./Med.) 2001]
Options:
A) ? 5.40 eV
B) ? 2.72 eV
C) ? 0.85 eV
D) ? 0.54 eV
Show Answer
Answer:
Correct Answer: D
Solution:
$ A=A_{0}{{( \frac{1}{2} )}^{\frac{t}{{T_{1/2}}}}}\Rightarrow \frac{1}{64}={{( \frac{1}{2} )}^{\frac{60}{{T_{1/2}}}}} $ Þ $ E_{5}=\frac{-13.6}{5^{2}}=\frac{-13.6}{25}=-0.54\ eV $
