EC, ON, Q#s, LDS
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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the 3D path an electron probably takes within an energy level | orbital
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evidence for energy levels comes from the _____ of the elements | line emission spectra
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proposed that electrons behave as particles and waves (dual wave-particle theory) | De Broglie
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the bending of a wave as it passes by the edge of an object | diffraction
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the overlapping of waves | interference
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His UNCERTAINTY PRINCIPLE states that it is impossible to determine the position and velocity of an electron or any other small particle at the same time | Heisenburg
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developed the WAVE EQUATION, which laid the foundation for Quantum Theory | Schrodinger
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describe the energy state and location of electrons | quantum numbers
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electrons that are not in the highest occupied energy level are called___ | inner shell electrons
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the first quantum number is called ____ and indicates ____ | principal quantum number; main energy level occupied by the atom
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specify the properties of atomic orbitals and the properties of electrons within the atomic orbitals | quantum number
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the second quantum number is called ___ and indicates ___ | angular momentum quantum number; the electron's sublevel and the shape of the orbital the electron is moving in whith its sublevel
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s orbital has a ___ shape | sphere
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p orbital has a ___ shape | peanut
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third quantum number is called ___ and tells ___ | magnetic quantum number; a specific orbital section an electron is in at a given point in time along the x, y, z axis
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fourth quantum number is called ___ and indicates ___ | spin quantum number; direction of electron's spin
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the arrangement of electrons in an atom | electron configuration
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3 types of electron configuration: | 1.) electron configuration notation 2.) orbital notation 3.) noble gas notation
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an electron occupies the lowest orbital that can receive it (electrons enter the orbitals closest to the nucleus first) | Aufbau Principle
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no 2 electrons in the same atom can have the same set of 4 quantum numbers (at most, an atomic orbital may contain 2 electrons with opposite spin) | Pauli's Exclusion Principle
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the idea that electrons witht he same spin eneter each orbital section before electrons with opposite spin eneter is known as ___ | Hund's Rule
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pair of electrons with opposite spin in the same orbital | electron pair
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