They theory that prevailed was Cannizzaro theory.
John Thomson was born in 1856, and is recognised as the British scientist who discovered and identified the electron. In 1897 Thomson demonstrated that cathode rays - high-speed electrons emitted by a negative electrode of a vacuum tube when an electric current passes through it - were actually units of electrical current that were made up of negatively charged particles that were smaller than an atom... displayed 300 characters
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In early 1915 he announced his version of an atom structure: a very small, very tightly packed, charged nucleus which had electrons orbiting it.
Bohr was a Danish physicist who was born in 1885. He thought that electrons move in definite orbits around the nucleus, like planets moving around the nucleus... displayed next 300 characters
Using quantum ideas due to Planck and Einstein, Bohr conjectured that an atom could exist only in a discrete set of stable energy states.
Bohr won the Nobel piece prize for his theory of atomic structures...
During the writing of this book, Mendeleyev tried to classify the
elements according to their chemical properties. In 1871 he published an
improved version of the periodic table, in which he left gaps for elements that
were not yet known...
This marks the point where one begins to develop his or her own set of moral principles. The rules in this case are more flexible and societal structure and acceptances decide what rules are kept and desired and what rules are not of importance and can be manipulated...
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