Speed of an electron in Bohr's 7^th orbit for Hydrogen atom is 3.6 x 10^6 m/s. The corresponding speed of the electron in 3^rd orbit, in m/s is:

Question

Accepted Answer

Correct answer: D. (d) V_n ∝ Zn Z=1 , ∴V_n ∝ 1n ∴ V_3V_7= 73 ∴V_3= 73V_7 = 73 3.6 10^6m/s = 8.4 x 106m/s

$Speed of an electron in Bohr's 7^{t h} orbit for Hydrogen atom is 3.6 x 1 0^{6} m/s. The corresponding speed of the electron in 3^{r d} orbit, in m/s is:$