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# Electrons

Term | Definition |
---|---|

Cation | Positively charged ION |

Anion | Negatively charged ION |

Energy Levels | The possible energies electrons can have |

Quantum | Discrete packet of energy or matter |

Quantum Mechanical Model | Based on probability |

Atomic Orbital | Mathematical function that describes the wave-like behavior of electrons |

Electron Configuration | Distribution of electrons |

Aufbau Principle | Electrons fill lowest orbitals first |

Pauli Exclusion Principle | Each orbital can hold 2 electrons with opposite spins |

Hund's Rule | Within a sub-level, place one electron before per orbital before pairing |

Wavelength | On a periodic curve, the length between to consecutive troughs |

Frequency | Numbers of peaks that pass a stationary point |

Hertz | The SI derived unit used to measure the frequency of vibrations |

Electromagnetic Radiation | Radiation originating in a varying magnetic field |

Atomic Emission Spectrum | Each element has a unique bright line emission spectrum |

Ground State | Lowest or most stable state of an atom |

Photons | Quantum of Electromagnetic radiation that describes the particle properties of an electromagnetic wave |

Heisenberg Uncertainty Principle | Impossible to know the velocity and position of an electron at the same time |

Periodic Law | Properties of the elements are periodic functions of their atomic number |

Atomic Radius | Measure of the size of its atoms |

Ionization Energy | Energy required to remove one electron from a neutral atom |

Electronegativity | Measure of the tendency of an atom to attract electrons |

Created by:
Dante T.