Hi Manish,

Vector form of Coloumb's law states that Force is a vector quantity as it has both magnitude and direction. ... Let the force on the q1 charge due to q2 be F12 and force on q2 charge due to q1 charge be F21. The corresponding vector from q1 to q2 is r21 vector.

F  = k q ₁ q ₂ / r ²

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!