Question
The radius of the second Bohr orbit for the hydrogen atom is :
(Plank's const. h = 6.6262 × 10–34 Js ; mass of electron = 9.1091 × 10–31 kg ; charge of electron
e = 1.60210 × 10–19 C ; permittivity of vacuum
∈0 = 8.854185 × 10–12 kg–1 m–3 A2)
-
1.65Å
-
4.76Å
-
0.529Å
-
2.12Å
Solution
D.
2.12Å
Radius of nth Bohr orbit in H-atom = 0.53 n2Å
Radius of II Bohr orbit = 0.53 ×(2)2 = 2.12 Å
