It becomes positively charged because the positive protons now outnumber the negative electrons.
When an atom loses an electron, it becomes a cation and has a positive charge.
An ionic molecule is formed.
If an atom loosed electrons then it becomes an ion. The electrical charge in the atom becomes a positive ion.
if it looses an electron
When an atom gains or looses a valence electron it becomes a charged particle called an ion
This electron is a valance electron.
Valance electron
If an atom loses an electron, its charge becomes a positive. (The process of losing an electron is called OXIDATION, by the way.) Depending on the electron configuration, the atom could become "happy" (because its outer ring is now empty) or it could want to bond with another atom to fill ALL of the spots on its outer electron ring.
The charge of a valence Electron is negative. The word valence means the combining power of atoms: the combining power of atoms or groups measured by the number of electrons the atom or group will receive, give up, or share in forming a compound. Therfore nothing changes the electrons charge. The electrons charge will always be negative no matter what. Electrons make up the stable atoms. If it the atom gains or looses an electron it becomes either a positive (looses an electron) or negative (gains an electron) ion.
metallic bond
If the atom loses electrons, the atom becomes positively charged because the number of positively charged protons.
A valance electron is one that is associated with an atom. The valence orbit is the one that electron travels in.