When did Rutherford first split the atom?

Ernest Rutherford was a physicist who studied radioactivity. He found several different forms of radiation and also discovered that elements change as a result of radioactive decay. He received a noble prize for his work. Rutherford went on to discover the nucleus of the atom and in 1919 he finally succeeded in splitting the atom for the first time he described the atom as a tiny, dense positively charged core called a nucleus in which nearly all the mass is concentrated around which the light negative constituents called electrons circulate at same distance much like the planets revolving around the sun…