could i get help or a formula for this question please Use the Energy Levels for Hydrogen to calculate the wavelength corresponding to the following electron transition Transition Energy in ev's Emitted wavelengths in m 2->1______ ________x10______
Here's a formula you can use after you've discovered how many energy is contained in the photon emited during the transition of the electron [tex]E=hf[/tex] where f is the frequency of the photon. How are frequency and wavelenght related?
taht is the question im as stumped as you are tahts all the info i have i had taht equation though it doesnt haev wavelength also how do i find the energy?
I dont think quasar is stumped, i think he was asking you a question which has an answer. The energy should be a given, or predicted by the bohr model. Think back to waves what other equation relates wavelength and frequency.
Ok, a photon travels at the speed of light. If its energy is given by hF, then the relationship c = (Frequency)(Wavelength) should give you its wavelength. All you ahve to do is find the energy drop from 2->1 and solve this equation and plug it into the E = hF one.
This is also true for light. Light is a wave too, and a "photon" is only a fancy name we give to "little chuncks" (quanta!) of light. So speed of light divided by wavelength =frequency.
-13.6 eV is the energy the electron has when it is in state n=1. You're looking for the energy it has lost in going from state n=2 to state n=1, hence you want the difference between the energy of n=1 and the energy of n=2: [tex]\Delta E = E_f - E_i[/tex]
hmm i got 1.15e53 10.2/1.6e-19/6.63e-34 its not right thought i think i missed soemthing wait is this is my freqwuancy correcT?
1 kg = 1000 grams, so 2.3 kg = 2.3*1000 = 2300 grams. Same thing here: 1 eV = 1.6*10^19 J, so 12.2 eV = 12.2*1.6*10^-19 J.
In problems like this it's easier to use Planck's constant in eV instead of joules: [tex]\frac {10.2 eV} {4.14 \times 10^{-15} eV \cdot seconds} [/tex]
=f=594574507617985878855444072835.38 correct?\ then speed of light/f=w 299 792 458/594574507617985878855444072835.38=5.04e-22 taht still doesnt give me the correct answer the correct answer is 1.22e-7