Practice question
Question
The ratio of the kinetic energies of an electron in the first orbit of Li²⁺ to the second orbit of H is: (v₁ for H = 2.19 × 10⁶ m s⁻¹, mₑ = 9.1 × 10⁻³¹ kg)
Explanation
KE₁(Li²⁺)/KE₂(H) = 9.
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