The emission spectrum of gold shows a line of wavelength 2.676 x 10-7 m. How much energy is emitted as the excited electron falls to the lower energy level?

Q. The emission spectrum of gold shows a line of wavelength 2.676 x 10-7 m. How much energy is emitted as the excited electron falls to the lower energy level?

A.            7.43 x 10-19 J

B.            5.30 x 10-20 J

C.            6.05 x 10-19 J

D.            3.60 x 10-20 J

Answer: 7.43 x 10-19 J