1.(a)
γ = µ/(Iℏ) = (g*µ_N)/ℏ => g = (µ)/(I*µ_N)

Taking into account that µ is in units of µ_N, we get,

γ = µ/I

Ground State Cd-111:
µ = -0.59403
I = 1/2
g = -1.18806

245 keV State Cd-111:
µ = -0.7663
I = 5/2
g = -0.30652

1.(b)
g = µ/(I*µ_B)
µ = µ_B
I = 1/2
g = 2

1.(c)
µ = g*I*µ_N
I = 1/2
g = -3.826
µ = -1.913 µ_N