The Cl atom gains an electron from another atom, and electrons carry a 1- charge.
The Cl atom does this because it has 7 outer shell electrons, which isn't very stable, while an outer shell of 8 electrons is stable.
Cation: an atom who lost electrons.Anion: an atom who gain electrons.Monoatomic ion: ion formed from one element, as chloride Cl-.Polyatomic ion: ion formed from two or more elements, as (SO4)2-.
Cl- Chloride ion 1s22s22p63s23p6 Cl Chlorine atom 1s22s22p63s23p5
Chloride or Cl- is the anion (Negative ion) formed by a single chlorine atom that gains an extra electron.
Ionic bond because losing 1 electron makes the atom a +1 ion; gaining 1 electron makes the atom a -1 ion. A Cl atom attracts the outer shell electron of a Na atom forming a Na^+1 ion and a Cl^-1 ion. And that is NaCl , table salt!!!!
When an atom loses electrons, it becomes a positive ion Examples: Na --> Na+ + e- Mg --> Mg2+ + 2e- When an atom gains electrons, it becomes a negative ion Examples: Cl + e- --> Cl- O + 2e- --> O2-
The sodium atom will donate an electron to the other atom which it is in compound with, leaving you with Na[+] and another, negatively charged ion (for example Cl[-]).
Na+ and Cl- ions are formed, which then results in the formation of the ionic compound NaCl.
Cl
Chlorine is an atom with a neutral charge, 0. Chloride is the chlorine ion with a charge of -1. You can tell the two apart because the chlorine atom is simply "Cl" whereas the chloride ion is denoted "Cl" with a superscript minus sign.
Not a neutral Cl atom but the chloride ion Cl- is isoelectronic with the noble gas argon.
fluoride ion
a bromide ion is formed, the ion formed has a -1 charge, and the ion formed is an anion