3.2 Bohr's Model of the Atom Flashcards
What is spectroscopy?
The analysis of the spectrum of light in order to determine the properties of the light source
Who invented the spectroscope? (2 people)
Robert Bunsen and Gustav Kirchoff
What is the process of spectroscopy?
Light is passed through a gas, then a prism to disperse various wavelengths of light, then a detector
Types of Spectra (emission spectrum)
Continuous: all wavelengths are present
Line: only particular wavelengths are present
Each element has a unique line spectrum, true or false?
True
What are the limits to Rutherford’s model?
Electrons emit photons of light as they are orbiting the nucleus, therefore they are losing energy. Meaning the electrons should spiral towards the nucleus and the atom should collapse, but this is not the case in reality
What is Bohr’s Quantum model?
Electrons occupy specific orbits around the nucleus
Electrons in MORE DISTANT orbits have GREATER ENERGY
Electrons cannot exist between orbits
When electrons gain energy, they move into a higher orbit
What are movements of electrons between orbits called?
Transitions
When are electrons in the excited state?
When they transition to higher energy orbits
When are electrons in the ground state?
When they transition back to the original lower energy orbit
What must the energy absorbed/released in a transition be consistent with?
A particular quantum of energy
