click below
click below
Normal Size Small Size show me how
Chem Ch. 4 VOC
Stack #155221
Question | Answer |
---|---|
a form of energy that exhibits wavelike behavior as it travels through space | Electromagnetic Radiation |
all the forms of electromagnetic radiation | Electromagnetic Spectrum |
the distance between corresponding points on adjacent waves | Wavelength |
the number of waves that pass a given point in a specific time, usually one second | Frequency |
the emission of electrons from a metal when light shines on the metal | Photoelectric effect |
the minimum quantity of energy that can be lost or gained by an atom | Quantum |
a particle of electromagnetic radiation having zero mass and carrying a quantum of energy | Photon |
the lowest energy state of an atom | Ground state |
a state in which an atom has a higher potential energy than it has in its ground state | Excited state |
when a narrow beam of the emitted light was shined through a prism, it was separated into a series of specific frequencies (and therefore specific wavelengths) of visible light – the bands of light are part of the line-emission spectrum | Line-emission spectrum |
the emission of a continuous range of frequencies of electromagnetic radiation | Continuous spectrum |
states that it is impossible to determine simultaneously both the position and the velocity of an electron or any other particle | Heisenberg uncertainty principle |
describes mathematically the waves properties of electrons and other very small particles | Quantum theory |
a three-dimensional region around the nucleus that indicates the probable location of an electron | Orbital |
specify the properties of atomic orbitals and the properties of electrons in orbitals | Quantum numbers |
symbolized by n, indicates the main energy level occupied by the electron | Principal quantum number |
symbolized by l, indicates the shape of the orbital | Angular momentum quantum number |
symbolized by m, indicates the orientation of an orbital around the nucleus | Magnetic quantum number |
has only two possible values(+1/2, -1/2) which indicate the two fundamental spin states of an electron orbital | Spin quantum number |
the arrangement of electrons in an atom | Electron configuration |
an electron occupies the lowest energy orbital that can receive it | Aufbau principle |
no 2 electrons in the same atom can have the same set of four quantum numbers | Pauli exclusion principle |
orbitals of equal energy are each occupied by one electron before any orbital is occupied b a second electron, and all electrons in singly occupied orbitals must have the same spin | Hund’s rule |
electrons that are not in the highest occupied energy level | Inner-shell electrons |
the Group 18 elements (helium, neon, argon, krypton, xenon, and radon) | Noble gasses |
outer main energy level fully occupied [most cases-by 8 electrons] | Noble-gas configuration |