an electrone in a metal is free to move anywhere but cannot leave the metal explain why ?
Answers
Answer:
Explanation:
The weaker force of attraction between the nucleus and the valance electrons allows that electron to move freely with in metal surface but this attractive force always attracts the electrons towards the nucleus and so these electrons are bound to the atom and thus they cannot leave the metal surface.
Answer:
The weaker force of attraction between the nucleus and the valance electrons allows that electron to move freely with in metal surface but this attractive force always attracts the electrons towards the nucleus and so these electrons are bound to the atom and thus they cannot leave the metal surface.The electrons then move freely throughout the space between the atomic nuclei. ... Metals are good conductors of electricity because the electrons in the electron sea are free to flow and carry electric current. Metals are ductile and malleable because local bonds can be easily broken and reformed. Metals are shiny.Most metals have very few electrons in their outermost energy shells, and some have vacant outer electron orbitals. What this means for the metal is that its valence electrons are decentralized and free to move around. Remember that in ionic bonds, the electrons transfer from one atom to another atom.When a positive charged object is placed near a conductor electrons are attracted the the object. ... When electric voltage is applied, an electric field within the metal triggers the movement of the electrons, making them shift from one end to another end of the conductor. Electrons will move toward the positive side.In a metal, large number of free electrons are found. These electrons are in constant random motion that means they are moving here and there. Thus, current generated in one direction is cancelled out by current generated in opposite direction by these randomly moving electrons. so, net current in a metal is zero.Electrons do not move along a wire like cars on a highway. Actually, Any conductor (thing that electricity can go through) is made of atoms. Each atom has electrons in it. If you put new electrons in a conductor, they will join atoms, and each atom will deliver an electron to the next atom.The energy required to free the valence electrons is called the band gap energy because it is sufficient to move an electron from the valence band or outer electron shell, into the conduction band where upon the electron may move through the material and influence neighboring atoms.
Explanation: