Question

Calculate the wavelength of light needed to excite an electron

Answer 1

Explanation:

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First i used ∆E = 2.178 X 10-18 J[1/n2i – 1/n2f], then E = hc/λ

First i used ∆E = 2.178 X 10-18 J[1/n2i – 1/n2f], then E = hc/λI got 9.459 x 10-9 nm.