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Historical Development Of Atomic Structure
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T3 IBS Chemistry
Ms. Redman
The idea behind the "atom" goes back to the Ancient Greek society, where
scientists believed that all matter was made of smaller, more fundamental
particles called elements. They called these particles atoms, meaning "not
divisible." Then came the chemists and physicists of the 16th and 17th centuries
who discovered va ....
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....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. His chart and theories gained acceptance by the scientific
world when three elements he "predicted"—gallium, germanium, and scandium—were
subsequently discovered In 1856.... |
| Word count: 1213 |
Page count: 5 |
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