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What percent of the atom is free space empty of mass?
If the atom's outer boundary is established by the "mean radius of the outermost electron orbital" or something like that, the atom is waaaaaaaaaaay over 99% free space. The hydrogen atom has a diameter over 100,000 times the diameter of the proton in it's nucleus.
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Anybody who knows much about atoms and is willing to ignore virtualparticles. The credit for actually discovering this should probably go toRutherford. (Or Rutherford, Geiger,… and Marsden ... Geiger andMarsden actually did the experiment in Rutherford's lab, andRutherford was the one who explained the results.)
Yes in fact Ernest Rutherford discovered that atoms contain mostly empty space, with his gold foil experiment. He discovered that the electrons are not randomly placed around… the nucleus. Read more: http://wiki.answers.com/What_scientist_said_atoms_contain_mostly_empty_space#ixzz17NE5I4gI
not exactly. it is mostly empty space- about 99.99...% but at the centre of the atomic structure, there is a nucleus which contains nucleons (protons and neutrons).… incredibly small electrons circulate around the nucleus, but their mass is negligible- about 1/2000 the mass of a proton. x
The man who discovered that an atom is mostly empty space would be Rutherford.
It's because of the electrostatic force between a nuclei and electron(s).
Rutherford came to this conclusion after his Gold-Foil experiment. He found that most of the alpha particales(when released) went straight through the gold foil of which consi…sted of atoms. In the middle of the atom theres a small nucleus that has mass and positive charge. Because the nucleus is so small the alpha particles were able to go straight through leading to the conclusion that atoms are mostly empty space. so why did he do the gold-foil experiment?
Most of the mass of an atom comes from its nucleus, which is made up of protons and neutrons. Electrons have a negligible mass.
First he took gold and made a sheet that was absurdly thin. Gold is soft and doesn't fall apart easily so it was ideal for this purpose. Then he used a known method of produ…cing alpha particles(which are actually nucleus's of helium we found out later), and shot them at the gold foil. in a nearly complete circle around the gold foil he had detectors for this "radiation" (he had an opening where the radiation gun was). nearly all of the "pellets" went straight through the foil without any damage to it or distortion to the particles. A few seemed to bounce off, as they were detected behind the foil and more or less random. He said that this rebound was like a 6 inch artillery shell being fired at a sheet of tissue paper and for it to come straight back. He then put forward the idea of nucleus's and empty space 'as the fly in the cathedral' which overturned the previous nugget theories (and a bunch of others).
When the space inside an atom is described as "empty," what that refers to is mass. Most of the mass of the atom is concentrated in the tiny center, the nucleus. So most of th…e space inside the atom is devoid of mass. However, that does not mean there is nothing inside the atom. The "empty space" inside an atom is not actually empty. It is filled with extremely strong electric fields produced by the positive nucleus and the negative electrons. These fields interact with the electromagnetic radiation that corresponds to visible light. This interaction makes it impossible for light to travel through most atoms without being absorbed or deflected. Therefore, you can't see through most substances.
Actually this is true. The nucleus of an atom makes up a very small percentage of the atom (to be safe I am going to say less than five percent at largest.) The rest of the at…om is composed of the electron orbitals. Since there can only be so many electrons in a single orbital at any given time most of the space in the orbital is never filled. Thus a large majority of an atom is indeed empty space.
What scientist demonstrated that the atom is mostly empty space with a small positively charged nucleus containing most of the mass of the atom?
most of the mass is found in the nucleus.
If the space is in outer space there can be no gas against which a terminal velocity can occur