Electronic Configuration Flashcards
What do you do when you have a tube of hydrogen gas at a low pressure
Pass a high voltage through it to get a coloured light corresponding to different frequencies and wavelengths
How is the visible light spectrum observed
Passing white light into glass prism or diffraction grafting = rainbow
What are these coloured lines called when Hugh voltage is passed through
Emission spectra
What causes the lines on the emission spectra
Due to photons of energy being emitted when electrons from higer energy levels move to lower ones
What are small fixed amounts of energy called
Quanta carried by photons
When an electron absorbs the appropriate quantity of energy it
Becomes excited and moves form it’s ground state to a higher energy level
Energy is given out by he electrons when they
Move back to their lower state
Name all five series and where they fall to and lines produced
Lyman ---> n=1 ---> UV Balmer ---> n=2 ---> visible Paschen ---> n=3 ---> IR Brackett ---> n=4 ---> IR Pfund --> n=5 ---> IR
Neil bhors theory worked well with hydrogen but
Not good model for other atoms