What does a muon have to do with the structure of the atom?
94934
Good question.  As you probably know ordinary atoms involve protons, neutrons, and electrons.  The muon plays absolutely no role in the structure of the atom.  In fact it is just one of many particles in nature that decay very quickly and don't seem to have any real purpose.  (although it is possible conservation of energy or momentum or something requires them)  It is interesting to note that muons have the same charge as an electron but a greater mass.  Muons are attracted to protons and can form atoms with muons circling around the nucleus instead of electrons.  Because of the muon's larger mass the muonium atoms are "smaller" than ordinary atoms.  Muonium atoms also don't last very long.  It is hoped that someday a particle theory (perhaps string theory) will explain why all these odd "useless" particles exist.
914809
Not for an atom but it is for an electron.
715843
B: Some mass is converted into energy in order to split the unstable nucleus into two, smaller, stable ones.\n\nC: Their nuclei are too big to remain in one lump of mass. Particles (alpha, beta, gamma, etc) start shooting off in all directions, to bring the nucleus down to a smaler size. It's all about the smaller size.\nAlso, no atom can have more than one nuclues, because then it would be two atoms. More or less elctrons make an atom into a charged ion, not an isotope. Neutrons are what make isotopes.
361432
In scientific explanation\nThe basic particle of a matter is atom. Its also divisible but then the properties of that matter will not remain.\n\nThere can also be said every matter is from electron, protons and charge less neutrons. But then it will be devised into light.\n\nIf you look in the vacuum(absence of anything), it should be neither atom nor protons nor something...it should be "ZERO"(which is used to prove a decision "False" or absence of anything).\n\nSay "you have no answer".\nThat means you have zero answer.Think of it, keep trying and make another theory. :-D
403152
Subatomic particles are under the influence of totally different forces than the large objects that are affected by gravity, etc.  The forces affecting subatomic particles act ONLY under extremely short distances and despite the efforts of Einstein and everybody since him, those forces cannot be resolved or integrated with gravity, etc.\n\nIn other words, you are comparing two totally different things: apples and elephants.
262536
They are known as the fundamental particles of an atom.\n\nIn the nucleus, the PROTONS, which have the + charge, and the NEUTRONS, which have the 0 charge.\n\nOutside the nucleus, the ELECTRONS, which have the - charge.\n\nBut research has it that there are more particles of an atom like the quark, antiquark, lepton, antilepton
72779
A molecule is made up of atoms.
298477
neutrons\n\nIsotopes have to have the same numbers of protons\nor they'd be different elements.  Since the\nelectrons match up with the protons, the electron\ncount is consistent too.
606473
Quite frankly, we don't know. Like listed above, there is a variety of smaller particles that we have been able to smash an atom into. However, each time we build a bigger smasher, we get new particles. The thought is that there is a fundamental particle that is no longer divisible, but I don't think science has commited to it yet.
499389
According to the standard model (which has proven correct MANY times) atoms are made up of neutrons and protons and are circled by electrons in their basic form. Neutrons and protons are both baryons (which are types of hadrons) and are composed of quarks. Quarks are fundamental particles (not composite) just like the electron. They are known as point particles as well.\n\nTheories are that these point particles are in fact strings (string theory) oscillating at different frequencies etc, but that is still disputed.
792343
An atom is made up of electrons, protons and neutrons\n\nProtons are made of two Up and one Down Quarks. The neutron is made of two Down and one Up Quarks.\n\nProtons have a diameter of about 1.5×10−15 m\nNeutrons have a radius of about 0.8 × 10−15 m\nElectrons have a radius of about 3x10^-15 m\n\nQuarks must be smaller than 10^-18 m. This determination is based on the highest energy collisions currently available
1014651
It is real.  We can measure the life of a muon here on the surface of the earth, but according to calcuations, this lifetime is much shorter than what we measure.  However, these muons are created in the upper atmosphere and move at relavatistic speeds.  Time dialation explains the increase in time.  Since they are traveling very fast, then time slows down and they appear to live longer!
638796
In standard model physics, we have 6 quarks, 3 leptons each with their associated neutrinos, 4 known gauge bosons; for the electromagnetic field (photon)and the weak interaction(W and Z bosons) that causes radioactive decay, and the strong force (gluon HA HA!).  They also have theorized that there is a particle called the Higgs boson and they are not completely sure what that does.  There also can be an almost infinite amount of created particles each with a different rest energy.
363174
To understand why an electron doesn't crash into the nucleus of an atom you first have to understand Heisenberg's uncertainty principle:  That it is impossible to know with absolute certainty both the location and momentum of a particle.  Any attempt to observe the location of the particle will change its momentum and vice versa.  This is the principle concept of quantum physics.  Like Einstein's description of light, this defies all logic in Newtonian physics, but it has been repeatedly proven nonetheless.  For now, just accept it.\n\nAn electron must stay a certain distance (or multiple of a certain distance) from the nucleus because it if it were within that distance we would know its location in relation to the nucleus with such certainty that its momentum would become extremely large, causing it to fly away from the nucleus.  Therefore any time we observe an atom it MUST be located a minimum distance from the nucleus which is always a multiple of Planck's constant h [6.626068x10^-34 (m^2)kg/s].
16762
The atomic number is the number of protons.
422082
Alpha particle is nothing but Helium atom (2 He 4)\nSo alpha decay causes a decrease in 2 tomic numbers and 4 mass numbers \nexample:  U (92, 238)----> TH(90, 232) + 2Beta particles\n\nBeta particle is like electron: so u will see  atomic number increases by 1 and no change in mass number\n\nGamma ray is just energy emission\nIs it clear?
471090
Well, a proton is not an elementary particle.  And the electron is the smallest lepton.  However, an elementary muon will decay to an electron and neutrino when passing from space into an atmosphere