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Chemistry Test 3-2
EC, ON, Q#s, LDS
Question | Answer |
---|---|
the 3D path an electron probably takes within an energy level | orbital |
evidence for energy levels comes from the _____ of the elements | line emission spectra |
proposed that electrons behave as particles and waves (dual wave-particle theory) | De Broglie |
the bending of a wave as it passes by the edge of an object | diffraction |
the overlapping of waves | interference |
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 |
developed the WAVE EQUATION, which laid the foundation for Quantum Theory | Schrodinger |
describe the energy state and location of electrons | quantum numbers |
electrons that are not in the highest occupied energy level are called___ | inner shell electrons |
the first quantum number is called ____ and indicates ____ | principal quantum number; main energy level occupied by the atom |
specify the properties of atomic orbitals and the properties of electrons within the atomic orbitals | quantum number |
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 |
s orbital has a ___ shape | sphere |
p orbital has a ___ shape | peanut |
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 |
fourth quantum number is called ___ and indicates ___ | spin quantum number; direction of electron's spin |
the arrangement of electrons in an atom | electron configuration |
3 types of electron configuration: | 1.) electron configuration notation 2.) orbital notation 3.) noble gas notation |
an electron occupies the lowest orbital that can receive it (electrons enter the orbitals closest to the nucleus first) | Aufbau Principle |
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 |
the idea that electrons witht he same spin eneter each orbital section before electrons with opposite spin eneter is known as ___ | Hund's Rule |
pair of electrons with opposite spin in the same orbital | electron pair |