Atomic Structure Question 193
Question: The wave number of the first line of Balmer series of hydrogen is 15200 $ c{m^{-1}} $ . The wave number of the corresponding line of $ L{i^{{2^{+}}}} $ ion is
Options:
A) $ 15200,c{m^{-1}} $
B) $ 60800,c{m^{-1}} $
C) $ 76000,c{m^{-1}} $
D) $ 136800,c{m^{-1}} $
Show Answer
Answer:
Correct Answer: D
Solution:
- $ \overline{v}(L{i^{2+}})=z^{2}\times 15200c{m^{-1}} $
$ =3^{2}\times 15200c{m^{-1}} $
$ =9\times 15200c{m^{-1}} $
$ =136800c{m^{-1}} $
