If raycast hits object with tag

Hi,

I am inexperienced with ray casting and need some help. as it stands I am trying to make sure that when I click on one game object with a tag "one" it will do one thing, but if it hits andything else it will do another code. I have tryed this a cupple of time now and would like come help.

     if (Physics.Raycast (ray, out hitInfo)) { //sets the layormask on the raycast.
                 //if (RaycastHit.collider.gameObject.tag ("one")) {
                 //         do 1 code
                 //}
                 //else if (RaycastHit.collider.gameObject.tag !== ("one")){
                 //     do other code
                 //}