[填空题]
What is the magnitude of thhaxnddm z l +03pclx/ dd-8v5kw9(4mcbewez -8a-o/) yd s3v7tqpo0ke electric force of attraction between an iron nucleus o7/wod 0y -sap-ekv)3ez8qtb $(q\,=\,+26e)$ and its innermost electron if the distance between them is $ 1.5\times10^{-12 }\,m\,?$ $ \times10^{-3 }N$
