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Name: ______________________________Steps to solving calculations:What information are we given?What is the problem asking for?What formula does the question involve?Manipulate the equation in order to find what you are looking forPlug in the numbers given to youCalculate, and this should give you the answer.The Hydrogen Spectrum and the Bohr Model:e- can only have specific ______________ energy values.Light is emitted as e- moves from one energy level to a ____________ level.The Bohr Model was found by Danish Scientist, _________________, in ________to explain 1) why hydrogen atoms lose and gain discrete quanta of energy and 2) why their electrons do not spiral into their nuclei.As an electron moves from a higher state to a lower state this is called _______________.As an electron moves from a lower state to a higher state this is called _______________.When the electron in a hydrogen atom is in the lowest (n=1) energy level, the atom is said to be in its _____________ ____________.If the electron in a hydrogen atom is in an energy level above n=1, then the atom is said to be in an _____________ ____________.The movement of an electron between any two energy levels is called an ______________ ________________.In 1888 Swedish physicist _________________________ published a more general empirical equation for predicting the wavelengths of hydrogen’s spectral lines:145732538735E= RH= Ni= Nf= Calculations:Using the Bohr equation, calculate the change in energy when an electron transitions from n = 3 to n= 2 in a hydrogen atom.Calculate the energy and the wavelength (nm) of a hydrogen electron that moves from the fourth shell (n=4) to the first shell (n=1).Calculate the wavelength (nm) of a photon emitted by a hydrogen atom when its electron drops from the fifth shell to the second shell.Wave Behavior of Electrons:Why is energy quantized? In 1994 De Broglie reasoned that e- is both _______________ and _______________.?=h/muh (J*s) = u (m/s) = m (kg) = What is the de Broglie wavelength (nm) associated with a 3.5 g soccer ball traveling at 12.3 m/s?The wavelength of moving electrons whose mass is 5.60*10^-34 at speed 79 m/s? ................
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