If a photon dropping from the n = 7 to the n = 1 level hit the surface of Ag, what would be the wavelength of the ejected electron in inches?

366 inches

Explanation:

From;

1/λ = RH(1/nf^2 - 1/ni^2)

Given that;

nf= 1, ni= 7, RH= Rydberg constant for hydrogen

1/λ = 1.097 × 10^7(1/1^2 - 1/7^2)

1/λ = 1.097 × 10^7(1 - 0.02)

λ = 9.3 × 10^-8 m or 366 inches

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8