a) for the ground state: g = -0.5940*2*hbar/uN
for the 245 keV state: g = -0.766*hbar / (5/2)uN
b) uB = e*hbar / 2*m and g = 2*m*u / e*I = u*hbar / I*uB ~ 2
c) u = g*uN*I / hbar = -3.826*uN / 2*hbar