Chapter 2 Flashcards
Pauli Exclusion Principle
2 electrons per orbital
Hund’s rule
single electron occupy all empty orbitals within a sub-level before they start to form pairs in orbitals
State number of electrons in sub-levels s,d,p,f
s- 2, p-6, d-10, f-14
Aufbau Principle
electrons are placed into orbitals of lowest energy first
frequency(v) of waves
the number of waves which pass a particular point in 1 second
equation for measuring the speed of light (c) with wavelength λ and frequency v
c= vλ
continuous spectra
includes all of the frequencies and wavelengths of light
identify: rainbow
line spectra
includes selected frequencies
identify: lines
absorption spectrum
shows the radiation absorbed as atoms move from a lower to a higher energy level
emission spectrum
shows the radiation that is emitted when an atom moves from a higher to a lower energy level
What happens when an electron gains energy?
The atom becomes unstable and the electron falls to a lower energy level, thus emitting energy in the form of electromagnetic radiation.
What is planck’s constant? (h)
6.63x10 (to the)-34
What is c, the speed of light?
3 x 10 (to the) 8 m/s
What is Planck’s equation
energy = h x v
When an electron falls to the first energy level, what energy does it produce?
ultraviolet
