For the first task, the g-factor is found using π=π/πΌ. For the ground state of 111πΆπ , with π=β0.5940π_π and πΌ=1/2, the g-factor is π=β1.188g=β1.188. For the 245 keV level, where π=β0.766ΞΌ_N and πΌ=5/2 , the g-factor is π=β306.
For the second task, the g-factor of a free electron is found using π=πβ/ππ΅ πΌ. Since π=1ππ΅ and πΌ=1/2 , plugging these in cancels out β, leaving π=2.
For the third task, the magnetic moment of a neutron is given by π=ππΌπ_π. With π=β3.826 and πΌ=1/2 , the moment is π=β1.913 π_N