CP4+Ions+Group+1

Ions are atoms with either extra electrons or missing electrons. A normal atom is called a neutral atom. That term describes an atom with a number of electrons equal to the**atomic number**.

(Source: http://www.chem4kids.com/files/atom_ions.html)

EXTRA ELECTRON CI- (1 extra electron) S^2- (2 extra electron)

MISSING ELECTRON

Na+ (1 missing electron) Mg^2+ (2 missing electron)

LINK: http://www.purchon.com/chemistry/ions.htm#positive

http://www.slideshare.net/Jerfft/ions-isotopes-presentation (see beginning of site, the other parts aren't important)
 * Difference between isotopes and ions, see link:**

Questions:

1. What's the difference between ions and isotopes? (Give both definitions) An isotope is an atom with a different number of neutrons. An ion is an atom or group of atoms that has a positive or negative charge.

2. What is the ion symbol for oxygen with 3 missing electrons? (Look at Periodic Table of Elements) O^3+ 3. Write Chlorine as an ion with 2 missing electrons. Cl^3+ 4. Write Aluminum as an ion with 5 more electrons. Al^5-