Atomic Structure

Composition of Atoms
1. Protons (1 amu)
  1. +1 charge
2. Neutrons (1 amu)
  1. neutral charge
3. Electrons (negligible mass)
  1. -1 charge
Isotopes
1. Same number of protons but different number of neutrons
2. Carbon Isotopes
  1. Carbon 12, 13, 14
  2. 1/12 of carbon-12 is 1 amu
Relative Atomic Mass
1. An average of all common isotopes of an element dependent on abundance
Emission Spectra
1. Electromagnetic spectrum
  1. Wavelength (λ = meters)
  2. Frequency (v = sec)
  3. Velocity
    1. c = m/sec
  4. c (meters/sec) = λ / v
  5. Hydrogen Emission Spectra
Atomic emission spectra is based on wavelength
1. Violet = 400
2. Red = 700
When energy is supplied to an atom electrons are excited (gain energy)
1. they move from ground state to an excited state
  1. electrones are going back to ground state (loose energy)
    1. emit light
      1. Energy emit corresponds to a particular wavelength
        The more energy was emit, the higher the frequency of light is => lower wavelength

Resource summary

	Created by Dmitry Skvortsov over 3 years ago