Answer:

Explanation:
The difference between parallel and anti parallel alignment of the z component of an electron's spin magnetic dipole moment is given by

where μ= dipole moment B= strength of magnetic field and θ= angle between direction of magnetic field and dipole
here θ_2 and θ_1 are 180 and 0° respectively.


here μ is bohr magnetron or magnetic moment of an electron = 9.27×10^{-24}
put this value we get


<span>v = 25.0 km/</span><span>h = 25*5/18 m/s = 6.94 m/s
</span><span>centripetal force = mv²/r = 1275*6.94²/40 = 1537.18 N </span>
I think thats a trick question on the periodic table there is no Z, theres Zi which is zinc but no Z