2006-10-11 04:14:00 · 10 answers · asked by brainyyy 1 in Science & Mathematics ➔ Chemistry
Perfect answer is here
What does the Neil bohr's Second postulates says.
It says that an electron in a atom can revolve without radiating energy only in those orbit in which angular momentum of electron is equal to the integral multiple of constant (h/2*pi)
i.e mvr = n(h/2*pi)
where Angular momentum = mvr
While First postulate says that an electron revolves with a constant speed.The necessary centripetal force is provided by electrostatic force of attraction between positively charged nucleus & -vely charged electrons
mv^2/r = 1/4*pi*epsilon to the base 0
Hence the electrons do not falls in nucleus.
2006-10-11 06:58:10 · answer #1 · answered by ADITYA S 2 · 0⤊ 1⤋
I don't know for certain, but I would say that the gravity of the nucleus has little effect since electrons have *practically* no mass compared to the nucleus and they are whizzing around it.
Like a satellite around the earth.
No?
2006-10-11 11:35:00 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The electrons always move in orbits around the nucleus. this revolution provides the centripetal force so that keeps the electrons remain in their orbit. Just like planets revolve around sun. Their energy in an orbit is constant.
2006-10-11 12:36:23 · answer #3 · answered by GodLuvsU:)) 4 · 0⤊ 0⤋
electrons are -vely charged and protons in nucleus are +vely charged hence there is a repulsive force bet'n electrons and nucleus. Hence, they doesn't collide wid the nucleus.
2006-10-11 13:01:35 · answer #4 · answered by Krish 1 · 0⤊ 0⤋
itz d nuclear energy dat binds all d electrons, protons, n nucleus...in an organised state....no chance of colliding...n nucelus..is strong enough 2 over *** d attractions os mere elctrons.
2006-10-11 11:39:41 · answer #5 · answered by pioneer. 2 · 0⤊ 0⤋
Good. You have to know that each and every secret of nature has not been explored and a physicist to have an answer. We have hardly scratched the surface and even our newtonian physics has not been tested in different terrains.
May be you got to find out why?.
2006-10-11 12:36:25 · answer #6 · answered by liketoaskq 5 · 0⤊ 0⤋
because the proton and electron are oppositely charged particles..
2006-10-11 15:03:23 · answer #7 · answered by PIKACHU™ 3 · 0⤊ 0⤋
Hi. It can and does in a stellar collapse which results in a neutron star.
2006-10-11 11:21:38 · answer #8 · answered by Cirric 7 · 0⤊ 1⤋
because it's fixed in an orbital
2006-10-11 11:16:32 · answer #9 · answered by mighty_power7 7 · 0⤊ 1⤋
search in google.............
2006-10-11 12:16:51 · answer #10 · answered by Akshara Damle 1 · 0⤊ 0⤋