my question why only gold and tungsten is used for gene gun technique ? Pls Answer the question. Share with your friends Share 1 Fakeha Anis answered this Gold and tungsten are inert particles, i.e. they are not chemically reactive,. due to which they are used in the method of gene gun. 1 View Full Answer Sharma answered this Becoz they are very lite and least reactive ... -1 Amrit Pal answered this even platinum is least reactive in that case 1