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Nuclear Force...The nucleus of an atom consists of positively charged protons and uncharged neutrons

Nuclear force The nucleus of an atom consists of positively charged protons and uncharged neutrons. According to Coulomb's law, protons must repel each other...
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Rescooped by Marianne Parker from Atomic structure
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A Science Odyssey: You Try It: Atom Builder

How small can we go?

The stuff you scrape off burnt toast is made primarily of atoms of carbon. But what makes up a carbon atom -- or any other atom?

The first subatomic particle to be identified was the electron, in 1898. Ten years later, Ernest Rutherford discovered that atoms have a very dense nucleus, which contains protons. In 1932, James Chadwick discovered the neutron, another particle located within the nucleus.


Via Angela Stubbs
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