The energy of the n = 3 Bohr orbit is -13.6 eV for an unidentified ionized atom in which only one electron moves about the nucleus. What is the radius of the n = 6 orbit for this species?
given n = 3,
E = -13.6 eV
let z is the atomic number.
we know,
E = -13.6*z^2/n^2 eV
-13.6 eV = 13.6*z^2/n^2 eV
z^2 = n^2
z = n
= 3
radius of orbit, rn = 0.0529*n^2/z nm
r6 = 0.0529*6^2/3
= 6.348*10^-10 m or 0.6348 nm <<<<----Answer
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