who split the atom for the first time
Ernest Rutherford Rutherford moved in 1907 to the Victoria University of Manchester (today University of Manchester) in the UK, where he and Thomas Royds proved that alpha radiation is helium nuclei.[6][7] Rutherford performed his most famous work after he became a Nobel laureate.[5] In 1911, although he could not prove that it was positive or negative,[8] he theorized that atoms have their charge concentrated in a very small nucleus,[9] and thereby pioneered the Rutherford model of the atom, through his discovery and interpretation of Rutherford scattering by the gold foil experiment of Hans Geiger and Ernest Marsden. He conducted research that led to the first "splitting" of the atom in 1917 in a nuclear reaction between nitrogen and alpha particles, in which he also discovered (and named) the proton.[10]
Atom An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small; typical sizes are around 100Â picometers (a ten-billionth of a meter, in the short scale).