What is the orbital radius of the excited state in the Bohr model of the hydrogen atom? The ground-state radius of the hydrogen atom is 0.529 10-10 m.
A) 0.477 nm
B) 0.159 nm
C) 0.382 nm
D) 0.549 nm
Question 2
-rays of energy 2.9 104 eV are scattered by a free stationary electron through an angle of 135. What is the energy of the scattered X-rays, in electron volts?
(mel = 9.11 10-31 kg,
e = - 1.60 10-19 C, h = 6.626 10-34 J s, c = 3