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What are ground and excited states?

Updated: 8/20/2019
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10y ago

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In an atom, the electron or electrons have a certain normal distance from the atomic nucleus, and when they are at the normal distance, that is described as the ground state. If energy is added to an electron it will move further from the nucleus, or depending upon the amount of energy, may leave the atom entirely. If it moves further from the nucleus it is in an excited state. If it leaves the atom it is ionized.

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Q: What are ground and excited states?
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Do atoms in the excited state have more electrons than in the ground state?

Yes, because an atom in an excited state will normally give off energy and go to a less-excited state or to its ground state. Some atoms have long-lived excited states and are called "metastable".


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What is HTE difference between an atom in the ground state and an atom in an excited state?

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Is an excited state is less stable than a ground state?

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