The speed of the electron in the ground-state orbit of hydrogen is v₀. An electron in a Li²⁺ ion occupies the third Bohr orbit. If its speed is Nv₀, find N.

Question

G1 Physics · Accepted Answer

For a hydrogen-like ion, vₙ = v₀Z ÷ n. For Li²⁺: Z = 3, n = 3. Thus, v₃ = v₀×3 ÷ 3 = v₀. Therefore N = 1.