IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry - why can't the electron exist within the nucleus. hurry plz

roc

why can't the electron exist within the nucleus

a_JOSHI

coz of heisenbergs uncertainity principle...
if we assume it to be electron with a radius that of the nucleus
we get velocity more than sped of light which is not possible...
hence it wont exist
please rate if m correct

cutepooja

basically hit for uncertainity principle
i mean thaT in nucleus the energy of electron will be so high that nucleus will not be able to hold it
ok now suppose that electrons are inside the nucleus
diameter of nucleus is of the order of ten raise to power -15
m= 9.1* 10 to the power -31
change in position * change in momentum = h/4 pie now calculate velocity
which comes roughly 5.7 into 10 raise to power nine
ke = 1/2 mv*2 the energy is so high also
u know that speed of the electron is higher than that of light
see my rates i gave answer earlier also

bornleader

CHEK NCERT EXAMLE CHEM

magiclko

this can be xplained thru the uncertainity principle..

radius of nucleus is of the order of 10^-15 m

the maximum uncertainty = 2r = 2 X 10^-15m

thus, $\Delta x .\Delta v \ge h/4\Pi m\Rightarrow \Delta v \approx h/ [8\Pi ({10}^{-15}) (9.1 X {10}^{-31})]$

this upon solving will give V > 3 X10⁸ m/s which is not possible...

thus electron cannot exist within a nucleus

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