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Atomic Structure
Term | Definition |
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Nucleus | a dense, positively charged mass located in the center of the atom |
proton | a positively charged subatomic particle that is found in the nucleus of an atom |
Netutron | a neutral subatomic particle that is found in the nucleus of an atom |
Atomic number | equals the number of protons in an atom of that element |
Isostopes | atoms of the same element that have different numbers of neutrons and different mass numbers |
Energy levels | the possible energies that electrons in an atom can have |
electron cloud | a visual model of the most likely locations for electrons in an atom |
Orbital | a region of space around the nucleus where an electron is likely to be found |
ground state | when all the electrons in an atom have the lowest possible energies |
electron configuration | the arrangement of electrons in the orbitals of an atom |
electron | a negatively charged subatomic particle that is found in the space outside the nucleus |
mass number | the sum of the protons and neutrons in the nucleus of an atom |