a proton in at atom has a positive charge + and an electron has a negative charge - and they attract one another like magnets
You dont remove an electron from an atom. Its kept there by the bonds of the atom. However, you can split an atom from an atom.
The electrons farthest away from the nucleus are the valence electrons of an atom.
Valence electrons are those in the outermost shell of the atom.
There are 2 valence electrons in an atom of magnesium. There are 5 valence electrons that are in an atom of phosphorus. There are 4 valence electrons that are in a silicon atom.
Helium atom has 2 electrons.
You dont remove an electron from an atom. Its kept there by the bonds of the atom. However, you can split an atom from an atom.
Atoms are neutral all the time. Because there are equal number of electrons and protons in the atom it becomes an ion or charged if electrons are released or accepted by an atom. If the number of electrons are kept equal to the number of protons, the electrically neutral atoms can be made.
The electrons farthest away from the nucleus are the valence electrons of an atom.
Electrons are kept in the orbit around the nucleus by the electromagnetic force, because the nucleus in the center of the atom is positively charged and attracts the negatively charged electrons. From: http://www.ric.edu/faculty/ptiskus/Atomic_Force/
The flow of electrons from atom to atom is an electrical current.
valence electrons
The outer electrons of an atom are called valence electrons.
A single atom of Carbon has 6 electrons, with 4 in the outer shell which it will use to react
Valence electrons are those in the outermost shell of the atom.
All the electrons in an atom form the so-called cloud of electrons.
valence electrons are the electrons located in the outer shell of an atom which are available for reaction
The number of electrons depends on what type of atom it is.