When was the first model of the atom created?

Democritus was a Greek philosopher (470-380 B.C.) who is the father of modern atomic thought. He proposed that matter could NOT be divided into smaller pieces forever. John Dalton created the very first atomic theory.
A.

Who introduced atomic theory?

Democritus first suggested the existence of the atom but it took almost two millennia before the atom was placed on a solid foothold as a fundamental chemical object by John Dalton (1766-1844). Although two centuries old, Dalton's atomic theory remains valid in modern chemical thought. 1) All matter is made of atoms.
B.

Who was the first person to come up with the idea of an atom?

A bust of Democritus (or Democrites), who came up with the idea of indivisible atoms. The earliest known proponent of anything resembling modern atomic theory was the ancient Greek thinker Democritus. He proposed the existence of indivisible atoms as a response to the arguments of Parmenides, and the paradoxes of Zeno.
  • Can an atom be created or destroyed?

    According to Dalton's Atomic Theory, Atoms of one element cannot be changed into atoms of a different element by chemical reactions and atoms can neither be created nor destroyed in chemical reactions.
  • Who discovered element?

    Questions and Answers
    Element NameDiscovered ByYear
    AluminumHans Christian Oersted1825
    AmericiumGlenn T. Seaborg Ralph A. James Leon O. Morgan Albert Ghiorso1944
    AntimonyKnown since ancient times?
    ArgonSir William Ramsay Lord Rayleigh1894
  • Who first proposed the atomic theory?

    John Dalton
C.

Who was the person who invented the periodic table?

Dimitri Mendeleev
  • What was the first element to be discovered?

    A necessary prerequisite to the construction of the periodic table was the discovery of the individual elements. Although elements such as gold, silver, tin, copper, lead and mercury have been known since antiquity, the first scientific discovery of an element occurred in 1649 when Hennig Brand discovered phosphorous.
  • Who created the periodic table we use today?

    Dimitri Mendeleev
  • Who rearranged the periodic table?

    The periodic table was arranged by atomic mass, and this nearly always gives the same order as the atomic number. However, there were some exceptions (like iodine and tellurium, see above), which didn't work. Mendeleev had seen that they needed to be swapped around, but it was Moseley that finally determined why.

Updated: 29th September 2018

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