Question

Identify the charge on the atom or ion that has one proton, zero neutrons, and zero electrons.

A.-2
B.1
C.-4
D.0
E.2
F.-1
G.-3
H.4
I.3

Answer 1

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