X_C = capacitance reactance = 1/(ωC)
Resistance R, Inductive reactance ω L = X_L and capacitative reactance X_C all have the same units - Ohms, Ω..
R = Votage / Current = Power / Current² = Energy / (Time * Current²)
= [M L² T⁻² ] / [T A²] = [ M ] [ L² ] [ T⁻³ ] [ A⁻² ]
here A stands for Ampere , dimension for Current.
Capacitance : C = Q / V
V = work done / charge moved through potential difference
= Force * Distance / (current * Time)
= [ M ] [ L² ] [ T⁻³ ] [ A⁻¹ ]
Q = current * time = [ A ] [ T ]
C = [ A² ] [ T⁴ ] [ M⁻¹ ] [ L⁻² ]
ω = angular velocity = radians/sec = [ T⁻¹ ]
Capacitative reactance = X_C = impedance = 1/(ω C) = [ M ] [ L² ] [ A⁻² ] [ T⁻³ ]