According to Bohr's model, the radius of an electron orbit for n = 4 in a hydrogen atom is
A) 0.212 nm.
B) 0.846 nm.
C) 0.0265 nm.
D) 0.00331 nm.
E) None of these is correct.

Question

Quizplus · Accepted Answer

The formula for calculating the radius of an electron's orbit in Bohr's model is r = (0.529 * n^2) / Z, where n is the principal quantum number and Z is the atomic number. For hydrogen (Z = 1) with n = 4, the radius would be r = (0.529 * 4^2) / 1 = 8.48 x 10^-10 m, which is equivalent to 0.846 nm. Therefore, the correct answer is B.

According to Bohr's Model, the Radius of an Electron Orbit