Question
Question: What is the wave length emitted during the transition of electron in between two levels of Li<sup>2+...
What is the wave length emitted during the transition of electron in between two levels of Li2+ whose sum is 4 and difference is 2 ? Given RH = 109678 cm–1 :
A
0.1096 cm–1
B
0.101 ื 10–6 cm–1
C
1.14 ื 10–6 cm–1
D
109 ล
Answer
1.14 ื 10–6 cm–1
Explanation
Solution
n1 + n2 = 4 & n2 – n1 = 2 ; { n1 = 1 & n2 =3 }
λ1= RH × z2 × (121−321)
= 109678 × 9 × 98cm–1
l = 1.14 × 10–6 cm–1