what electrons spin around the nucleus?

Answer 1

all of em lol. or the ones in the first shell.

Answer 2

All but 'free' electrons are bound to the nucleus of one or more atoms. Free electrons can be found in an electric conductor, moving between atoms, mobile electrons in a semiconductor, or in an electron beam, such as in a cathode ray tube (CRT) as used in a traditional TV screen, or other vacuum tube.

Electrons in an atom or molecule really do orbit the nucleii. These orbits are not as simple as the early Bohr model implies. Electrons populate orbitals in spin pairs. The energy of the electron (therefore the radius of the orbit) is constrained by quantum mechanics to have discrete values, such that the length of the orbital path is an integral multiple of wavelengths of the electron wavefunction. Electrons interact with each other, since their like electric charge repels. Molecular bonds gain their strength from the fact that some of the electrons orbit more than one nucleus in the molecule. The Heisenberg Uncertainty Principle keeps you from knowing the exact position of an electron. This is why the 'orbits' are described as clouds of probability density on where an electron is likely to be.

Electrons orbit the nucleii somewhat like planets orbit the sun. Electron spin is a completely different concept.

Answer 3

The electrons do not really 'spin' around the nucleus in atoms. They are found in what is called 'orbitals', which are three-dimensional probability distributions, which correspond to the quantum mechanical state they are in. The way things work in such microscopic scales is very much different from our everyday experience, and has a 'logic' of its own, and is (in my opinion) very fascinating.

However, not to give the feeling the question is being fended off without an answer, let me mention this: In the Bohr model of the Hydrogen atom (which gives some right answers, but is known to be essentially incorrect) electrons _do_ spin around the nucleus. In the simplest case of a hydrogen atom with a single electron spinning around a single proton, the electron moves at about 1/137 of the speed of light, which is MUCH faster than sound. Sound travels at about 1100 feet per second, while light travels at 186,000 miles per second.. You do the math.

As a side note, with the Bohr model, the 'inner' electrons in atoms with greater atomic numbers would be moving faster...

Answer 4

If electrons were table sure, which could violate Heisenberg's uncertainty idea considering we may comprehend precisely the position an electron is in any respect situations. this is been said that electrons do "orbit" round an atomic nucleus to kind the characteristic electron cloud and that an electron's position must be predicted as a threat, yet its certain region at any given time can't be determined.

Answer 5

Depends what you mean by spin? All electrons HAVE spin. i.e. they rotate about a line from one pole to the other (much like earth rotates about its N/S axis). If you mean spin as in orbit then the answer is - none of them. The electrons exist in a 'cloud' surrounding the nucleus. The concept can be a little disturbing and involves quantum theory and uncertainty, and probably too much to be discussed here. Check out http://en.wikipedia.org/wiki/Electron_cloud

Answer 6

all of them

Answer 7

i love your mom