Question

spectroscope

Answer 1

my notes has :

elements can be identified by the line spectra observed through a spectroscope.

Answer 2

could somebody tell what a spectroscope is and what these line spectra mean plz

Answer 3

The spectroscope measures the frequency of light that enters it. When electrons jump between energy levels, they release a photon with an energy of. \[E = hf\] where E is energy, h plancks constant (just a number) and f is the frequency of light. This photon is then collected in the spectroscope and analyzed to find its frequency. Now when this was first done it was found that only certain frequencys were emmited when the electron jumps. meaning that the electron can only have certain energies! the word quantum means discrete(can only take specific values) hence quantum mechanics. So to summerise. spectroscope analyses frequency emmitted, line spectra means that electrons can only have certain discrete energy.

Answer 4

http://www.prettyrock.com/spectroscope-instructions.htm

Answer 5

@sara12345 ok

Answer 6

thnks so many kinds of photons can pop out from a given element is it ?

Answer 7

i mean many frequencies for a given element,and would all electrons in a atom wil get excited, or some wil remain in ground state when the element is heated

Answer 8

yeah, just the electrons in the outer energy levels get excited

Answer 9

oh just the valence electrons wil go to higher energy levels, and fall back they release photon.. i get it :)

Answer 10

and then when they get excited loads they fly off, and the next layer of electrons gets excited.. if they get too excited then they too fly off and this keeps happening until if you give it loads of energy the atom will be ionized

Answer 11

valence electrons exactly

Answer 12

and this photon frequency is fixed for a particular element is it ?

Answer 13

ohhk

Answer 14

the frequency is exactly the energy gap / h

Answer 15

oh ok i they didnt introduce h yet, i think they gona cover in next module, thanks @JamesWolf appreciate ur time thanks soo much xD

Answer 16

no problem @sara12345