Notifications
Clear all
Structure of Atom
1
Posts
2
Users
0
Likes
420
Views
0
18/08/2021 11:28 am
Topic starter
Find the value of wave number (\(\bar{v}\)) in terms of Rydberg's constant, when transition of electron takes place between two levels of He+ ion whose sum is 4 and difference is 2.
(a) \(\frac{8R}{9}\)
(b) \(\frac{32R}{9}\)
(c) \(\frac{3R}{9}\)
(d) None of these
1 Answer
0
18/08/2021 11:32 am
Correct answer: (b) \(\frac{32R}{9}\)
Explanation:
n1 + n2 = 4; n2 - n1 = 2;
∴ n1 = 1, n2 = 3
\(\bar{v}\) = R\((2)^2\)\(\Big[\frac{1}{1^2}- \frac{1}{3^2} \Big]\)
= \(\frac{32R}{9}\)