For AC any LC circuit will offer some reactance (opposition to current change),and its measured in ohms like resistance.In real life any LC circuit will also offer some resistance with the reactance.And the combination of this resistance and reactance is called impedance,its also measured in ohms.is the standard unit for LC circuit
Its the formula to find out the resonant frequency of a LC tank circuit.1/2π√(240,000nh x 384pf)