An ion is simply an atom with a positive or negative charge. It has either lost or gained 1 or more electrons, making the overall charge uneven. The charge on an ion will involve a number and a sign. The number will always be the number of electrons involved. For example, the loss of two electrons is 2+. The sign will be positive if electrons are lost and negative if electrons are gained. A positive ion is called a cation and a negative ion is called an anion.
Journal Entry #10
What would be the charges of the following atoms?
1. An atom having lost two electrons ________
2. An atom having lost six electrons ________
3. An atom having gained one electron ________
4. An atom having gained three electrons ________
5. An atom having lost five electrons ________
6. An atom having gained two electrons ________
7. An atom having lost one electron ________
8. An atom having gained four electrons ________
Based on its location on the periodic table, how many electrons would each element have to gain or lose to reach a stable octet?