Question

The radius of the third bohr orbit for H2 is?

Answer 1

According to the Bohr model, the radius of the nth orbit for a hydrogen atom can be calculated using the formula:
rn = $\frac{0.529 \ n^2}{Z}$
In this case, the third orbit corresponds to n = 3,
Z = 1 (for hydrogen).
Plugging in the values, we get:
r3 = $\frac{0.529\ *\ 3^2}{1}$
r3 = $\frac{0.529\ * 9}{1}$
r3 = 4.761 Å
Therefore, the radius of the third Bohr orbit for a hydrogen atom (and thus the H2 molecule) is approximately 4.761 Å.