IIT JEE , AIEEE Forum - Physics , Modern Physics

Deedy_Dash

By hund's rule, two electrons in a subshell must have different spin quantum numbers, But doesn't that mean they're revolving in the opposite direction, and they'll crash. I'm an amateur to this and am only in class 9. Please clarify my doubts fully and I promise a rate.

elessar_iitkgp

The spin of the electron is about itself. The spin quantum no. represents the direction of spin of the electron about itself. Then why should they crash

Deedy_Dash

So youre saying that spin number is direction of rotation. Does that mean electrons don't revolve?
But I thought if 2 objects rotate in opposite directions, thenthey'll automatically revolve in the opposite direction allong the same SUBSHELL and they'll crash?
Please clarify my doubts

sid_2222000

nope dude nothin like tht................and for the crashin thing.............the electrons are very minute matter and are present in form of waves in the atom ...............hence how can they crash..........moreover the space in the orbitals are very large hence probability of colliding is very very low...........do rate me if the ans is correct

catch_arnnie

electrons rotate as well as revolve. if they start crashing, then we would see self ionisation of objects around us...;) [but that never happens, does it ?].

Deedy_Dash

Yeah, maybee there is a lot of space in the atom with respect to the electrons and they don't collide often. Does that mean that they do revolve opposite each other and miss?
Even if there is a small probability of them colliding, After billions and billions of revolutions they're bound to crash at least once leading to self ionisation, yet that never happens?
Could it be because when they come against each other , they repel each other? But wouldn't this cause atomic instability?
Please clarify my doubts!!

Venky.B

spin does not signify any actual movement of the electron. It is just an arbitrary quantum number which determines the difference between 2 electrons in the same orbital (pauli principle). it is easy for us to visualise it as actually spinning. remember, electron is a wave also. read books on quantum theory.am i correct forum experts?

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