Electrostatics Part 2

A particle of mass 1mg and charge q is lying at the mid-point of two stationary particles kept at a distance '2 m ' when each is carrying same charge 'q'. If the free charged particle is displaced from its equilibrium position through distance ' x′ (x<<1m). The particle executes SHM. Its angular frequency of oscillation will be _____ ×105‌rad∕s if q2=10C2