Exam 1 Flashcards
(25 cards)
Which photon has the greater energy?
E4s to E3p < E2p to 1s
Which photon has the higher frequency?
V4s to V3p > V2p to V1s
Which photon has the longer wavelength?
Y4s to Y3p > Y2p to Y1s
Which photon has the greater speed?
C4 to 3 = C2 to 1
What relative charge does a proton have?
+1
Electromagnetic spectrum in order of increasing wavelength
gamme, xrays, UV, infrared, micro, radio
solid to gas
sublimnation
gas to solid
deposition
1cm cubed =
1mL
1dm cubed=
1 L
Pauli Exclusion Principle
no 2 electrons in an atom can have the same values of their 4 quantum numbers
Hunds Rule
if 2 or more orbitals with the same energy are available, one electron goes in each until all are half full
Aufbau Principle
Lower energy orbitals fill before higher energy orbitals
With increasing energy, the gap between one shell and the next shell…..
decreases
Core electrons
electrons in the filled, inner shells in an atom or ion
Valence electrons
electrons in the outermost occupied shell of an atom having the most influence on the atoms chemical behavior
The photoelectric effect
the release of electrons from a material as a result of electromagnetic radiation striking it
Work function
the amount of energy needed to dislodge an electron from the surface of a material
threshold frequency
minimum frequency of light required to produce the photoelectric effect
Quantum number
one of four related numbers that specify the energy, shape, and orientation of orbitals in an atom and the spin orientation of electrons in the orbitals
Node
a location in a standing wave that experiences no displacement
J.J. Thompson
cathode ray experiment, said that electrons are negatively charged particles
R. Millikan
oil drop experiment, calculated the mass and charge of an electron
Plum Pudding Model (Thomson)
the atom contains many negatively charged electrons held together by their attraction, dispersed throughout the atom
