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Charge of electron

Electron

The electron is a sub atomic unit or elementary particle that lies outside the nucleus of an atom. Moreover the electron moves in an orbit around the nucleus of an atom. Generally the charge of electron is negative. The symbol of electron is e. The static electricity is the result of the movement electron from one body to another and the electric current is the result of the flow of the electric charge that is the electron. The electron is very small in the size.

The fluctuation of electron

In the stable condition in an atom of an element the numbers of proton and electron remains equal all the time.  The number of proton always remain same but the number of electron changes at the time unstable condition of an element. The number of the electron will be more in an element that gains the electron. On the other hand the number of electron will be less in the element that donates the electron. The positive charged ion donates electron and it is basically a metal because metal donates electron. The negative charged particles is nonmetal basically because it accepts electron from metal in the ionic bond formation.

Electron and magnetic field

The charge of electron generates own electric field. Again the electron remains in motion all the time and it generates the magnetic field also.

Charge of electron in coulomb

The Coulomb considers as the Standard International Unit for depicting the electric charge. The symbol of coulomb is C. The charge of electron is -1.602176×10-19 C. The numerical value of the charge contains a negative sign in order to indicate the electrically negative charge. The relative charge of the electron is -1.

Mass of electron

The mass of an electron is 9.109389 × 10-28 gm or 9.109389 ×10 -31 kg. The relative mass of electron is 0.00055. On the other hand the mass of electron is 1/1836 times of the mass of proton. So the electron does not contribute much in the total mass of the atom. By using the equation Q = (m×g)/ E the mass of electron can be calculated.

Q= the charge of electron

E= the electric field

m = the mass of droplet

g = the gravity

By using Millikan oil drop experiment the magnitude of electron charge comes out that will help to find the mass of electron. The experiment finds that all drop has a charge that is the multiple of 1.602176×10-19 C. The mass of electron will result in the e/m ratio and the symbol e means charge and m means mass. The magnitude of electron charge is 1.602176×10-19 C. The mass m of electron will be m = (charge/ratio) = 9.109389 × 10-28 gm or 9.109389 ×10 -31 kg

Properties of electron

Every particle has some own characteristics. With this properties or characteristics the particle or element can be easily find out. The electron is a elementary particles and it has some features too that makes the particles quite different from the others. The properties of electron is as follow:

  • The charge of electron is negative
  • The negatively charged electron attracts the positive charge such as the proton.
  • The electrons in the atom of an element move in the orbital path around the nucleus
  • In the stable condition the number of proton and electron in an element always remain same. But in case of unstable condition the number of electrons changes due to the addition or elimination of electron.
  • In the ionic bond the metal donates electron and the nonmetal gains the electron in order to form the ionic compound.
  • In the covalent bond the element share the electron of the last shell so that it can fill the condition of octet rule along with the formation of covalent bond.
  • The electron considers as the elementary particles because they are not made up of smaller particles. Electron belongs to the lepton family.
  • The electron is quite identical to each other because no intrinsic physical property is found to distinguish electron.

Charge of an electron

The electron belongs to the lepton family. The lepton is a fundamental particles. Moreover the electron cannot be broken into smaller particle further. All the leptons have the electric magnitude of -1 and 0. The charge of electron is negative and the symbol of electrical charge is e. The electron has a charge of -1 that is opposite of +1 of the charge of proton. The negatively charged particle has more electrons than the number of proton in an element. On the other hand the positively charged particles has more number of proton than the number of electron in the element.

The shell of electron

In an atom the electrons remain in the shell. Every certain shell has the minimum and maximum capacity to hold the electrons in the atom of element and the shell has one or more electronic subshell or sublevel. The electronic shells make the electronic configuration of an atom. The number of electrons remain in the shell is 2n2. The magnitude of n in the first shell is 1. So the maximum number of electrons in first shell will be (2×12) =2 electrons. For the second shell the maximum number of electrons is (2×22) = (2×4) =8 electrons and it will also show the number of electron in the order of other shell too by using the 2n2.

The process of calculating the charge of an electron

The compound NaCl means sodium chloride and forms by the means of ionic compound. It means the element Na donates one electron to the nonmetal chlorine. At that time the sodium Na element becomes Na+ it means that the Na becomes positively charged ion by donating one electron in order to form both the ionic bond and octet rule.

From Na+ the total electrons can be calculated

The atomic number of sodium is 11.The atomic number is equal to the number of proton. So the number of proton is 11

In a normal condition the number of proton and electron remains equal in an atom in order to make the atom neutral. But in charged condition the number of electrons changes. The + plus in Na+ indicates it donates one electron.

The number of electron in Na+ is (11-1) = 10 electrons in the charged condition.

In case of donating electron by positive charged ion particle,

The number of electron = the number of proton – The number of donated electron

In case of gaining electron by negative charged ion particle,

The number of electron= the number of proton + the number of gained electron.

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