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chapter 4
atomic structure
| Term | Definition |
|---|---|
| nucleus | is a dense , positively charged mass located in the center of the atom |
| proton | is a positively charged subatomic particle that is found in the nucleus of an atom |
| electron | is a negatively charged subatomic particle that is found in the space outside the nucleus |
| neutron | is a neutral subatomic particle that is found in the nucleus of an atom |
| atomic number | a unique number for each element that equals the number of protons in an atom of that element |
| mass number | the sum of the number of protons and neutrons in the nucleus of an atom |
| energy levels | the possible energies that electrons in an atom can have |
| electron cloud | is a visual model of the most likely locations for electrons in an atom |
| orbital | is a region of space around the nucleus where an electron is likely to be found |
| electron configuration | is the arrangement of electrons in the orbitals of an atom |
| ground state | a state in which all the electrons in an atom have the lowest possible energies |
Created by:
madison.haywood
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