What is the mass and the charge of an electron and a proton?
962280
Electron carries negative charge of −1.6022 × 10^−19 coulomb and mass of electron is  9.11 × 10^−31 kg\n\nProton carries positive charge of 1.602 × 10^−19 coulomb and mass of proton is 1.6726 × 10^−27 kg\n\nNeutron carries neutral (no) charge and mass of neutron is 1.6749 × 10^-27 kg
739292
hey as me know they all are made of the elementary particles so than  the elementary particles are called quarks,theer are three type of quarks.they are the up quark,down quark & the middle quark.the value of these are that it is -1/3,1/3,1/3  so when it it made of three up quarks whose values are -1/3+-1/3+-1/3 that gives u the answer that is -1 there fore the charge of electron is -1ok
805822
Technically yes, because electrons do have mass, but it is negligible.  An electron has a mass of 9 x 10^-31 kg.  Still, if you had an infinitely sensitive measuring device, a negatively charged object would be heavier than an identical object with no charge.
515612
Atoms do not have a charge.\nIons have a charge (either plus or minus)
542290
Charge is a fundamental property. This means that we simply accept charge as an attribute of the particles. Much like we accept a person's name.\n\nIn other words, we don't know what causes charge in the sense which you inquire to know, but it doesn't prevent us from working with the particles.\n\nCharge aside, electrons and protons are very different particles. Electrons orbit atoms and weight next to nothing, while protons are locked in the nucleus of the atom and are considerably more massive.
465903
The positron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1, a spin of 1/2, and the same mass as an electron. When a low-energy positron annihilates with an electron, their mass is converted into the kinetic energy of two gamma ray photons (See electron-positron annihilation.).
568661
Let's see if I can remember...\n\na) Find the current flowing through a DC circuit, from a 12V battery and a 3 ohm resistor.\n\nBy Ohm's Law, V = IR, where\n\nResistance = ohms = R\nCurrent = amperes = I\nVoltage = volts = V\n \nYou want to find the current, in amperes, so we switch the equation around a little: if V = IR, that also means that I = V/R (dividing both sides by the same thing gives the same answer).\n\nNow, plug in our values:\nI = (12 volts/ 3 ohms) = 4 amperes\n\nb) what is the current in an AC circuit, with 120 V and 60 W lightbulb.\nIn this case, Watts is a unit of power, and volts is a unit of resistance, and amperes is a unit of current. Electrical power is amperes times volts, or W = I * V\n\nIn this case, W = 60 and V = 120, so we rearrange it:\nW = I * V or \nI = W/V or \nI = (60 watts/120 volts) = 0.5 A\n\nAs for the atom model problem...hmmm! Si is the symbol for silicon. It has an atomic number of 14 (not 16) and an atomic mass of 28.085. According to the Bohr model of an atom, every atom has electrons (with no mass, and a negative charge), protons (with a mass, and a positive charge) and neutrons (with a mass, and no charge). The number of protons and electrons must be equal in order for the atom to have no charge, if one is greater than the other, it results in an ion (positive ion if protons are greater than electrons, negative ion if electrons are greater than protons). Electrons orbit around a nucleus of protons and neutrons.\n\nNow, an element's atomic number (14 in this case) is the same as the number of protons (and electrons, since the element is not an ion, in this case). So a silicon atom has 14 electrons orbiting around its nucleus, and its nucleus also has 14 protons and a number of neutrons.\n\nThe electrons orbit in shells around the nucleus. In the case of silicon, the inner shell has two electrons, the next shell has the maximum number possible or eight, and the third shell has the other electrons, or four. (To check, 2+8+4 = 14.) \n\nFinally, the number of neutrons in the nucleus can be calculated if we know how much a neutron weighs and how much a proton weighs. If N is the weight of a neutron, and P is the weight of a proton, and the number of neutrons is n1, and the number of protons is n2, and we say that the atomic weight is A, we have:\n\nA = (n1 * N) + (n2 * P)\n\nWe want to find n1, so we rearrange this like:\n(n1 * N) + (n2 * P) = A\n(n1 * N) = A - (n2 * P)\nn1 = (A - (n2 * P))/N\n\nNow all we have to do is plug in the relevant values, and we shall get the number of neutrons in an atom of silicon:\nA = 28.085\nn2 = 14\nP = \nN = \n\nSo, n1 = (A - (n2 * P))/N = \n\nSimple! Or at least, simpler! :)\n\nI know what you're going through...getting back into the swing of things after you've been away from school for a long time can be a pain. But keep on plugging away, it's worth it in the end! Good luck!
129718
its due to their spin, and actually protons are composed of quarks (which due to their spin properties give it a positive charge).\n\nYou can do a search on quarks and learn more about sub-atomic particles
664696
The atomic number is equal to the number of electrons in the atom - therefore there are 28.However, since you have a postive 3 charge, there must only be 25.\nNow normally, the number of electrons would equal the number of protons, but since you have a charge of +3, that means that there are three less electrons than protons(you don't lose protons until you get into radioactivity, and it doesn't soung like you're there yet), so that means that you have 25 electrons and 28 protons.\nThe atomic mass is defined as the number of protons + the number of neutrons, so you have 60 = 28 + (number of neutrons). Therefore, you have 32 neutrons. Good Luck!
904938
positive or negative charge\n\nif it has an equal number of protons and electrons, it is neutral\n\nif it has an unequal number of protons and electrons, it has a charge and is an ion
705478
An ion differs from the original element in terms of the number of electrons.\n\nThe mass of an electron is about 1/1836 of a proton or a neutron.\n\nTherefore there would be a tiny difference in atomic mass, however in most cases it's fairly negligable.
612067
The electron is 511KeV and a proton is 938 MeV. This makes the proton 1836 times as massive.
263127
If you mean the charge, that is zero for a neutral element - same number of electrons and protons. In practice for large atoms the distribution of electrons can get distorted a bit depending on circumstances, though,
589038
The answer is c) +2. because if the atom has 12 protons, it is going to have 12 electrons to make it neutral. by taking away 2 electrons, it is giving the atom a positive charge, with 12 protons (positive charge) being more than 10 electrons (negative charge) giving an overall charge of +2.\n* protons - electrons = charge. =    +12-10=+2     =   c
46736
Find the number of protons. Then number of electrons = number of protons.
836917
WL = h/(mv)\n\nh is the planck constant\nm is the mass of the elecron\nLook for them in you book.  Plug the numbers.
425150
It is true that the neutron is heavier.  I can not remeber the exact numbers but it is not much heavier.  \n\nA neutron is basicly when you take a proton and an electron and combine them in to one particle (try this at home) thus the electric charges cancel out and it is a little bit heavier.  For the true mass you would have to include relitivistic effects.  \n\nbecause a proton is much heavier than an electron it is commonly stated that a proton has a mass of one, and an electron 0 and a neutron 1 as well.  And that is all well and good in most cases