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Chapter4Vocab
Chapter4VocabWords
Term | Definition |
---|---|
Nucleus | The 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 |
Electron | A negatively charged subatomic particle that is found in the space outside the nucleus |
Neutron | A neutral subatomic particle that is found in the nucleus of an atom |
Atomic Number | An element equals the number of protons in an atom of that element |
Mass Number | The sum of the protons and neutrons in the nucleus of that atom |
Isotopes | 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 |
Electron Configuration | The arrangement of electrons in the orbitals of an atom |
Ground State | When all of the electrons in an atom have the lowest possible energies |