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Atomic Structure

Atomic Structure. Bohr model of a helium atom. -An atom consists of a nucleus made of protons and neutrons that is orbited by electrons. Atomic Structure. -The number of protons, not electrons or neutrons, determines the unique properties of an element.

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Atomic Structure

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  1. Atomic Structure Bohr model of a helium atom -An atom consists of a nucleus made of protons and neutrons that is orbited by electrons

  2. Atomic Structure -The number of protons, not electrons or neutrons, determines the unique properties of an element -The number of protons is called the element’s atomic number -Most of the time, the number of protons will be the same as the number of electrons

  3. Atomic Structure -The size of a nucleus is very small (10,000 to 100,000 times smaller than the atom), but the nucleus contains almost all the mass (protons + neutrons). -The electrons occupy a large area around the tiny nucleus, and this is what determines the size of an atom. If the nucleus (1 proton) of a hydrogen atom were as large as the width of a human thumb, the electron would be on the average about a little more than half a mile away with only empty space in between

  4. Atomic Structure

  5. Atomic Structure Subatomic Particles

  6. Elements on the Periodic Table atomic number element symbol element name atomic weight Label the four parts of this element.

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