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Ionic Configurations


Monotomic Ion -> single atoms that have gained or lost electron(s).

Cations -> positively charged ions. They are formed from metallic elements when they lose electrons.

Anions -> negatively charged ions. They are formed from non-metals when they gain electrons.
 


OCTET RULE
    When atoms combine, bonds form so that each atom ends up with an octet (8) of valence electrons. Only Electrons are affected. 

Lost 1 = Loosing one negatively charged electron. If the element originally has 3, it will go down to 2.

Gained 2 = Gaining two negatively charged electrons. If the element originally has 33 electrons, it will raise to 36.

Alkali Metals Lose 1 Electron

Alkaline Earth Metals Lose 2 Electrons

Transition Metals usually have more than one ionic charges. (Nickel has an ionic charge of +2 and +3.)

Group 13 Lose 3 Electrons (Some Elements in this category have more than one ionic charge)

Group 14 Lose 4 Electrons (Some Elements in this category have more than one ionic charge)

Group 15 Gain 3 Electrons (Some Elements in this category have more than one ionic charge)

Group 16 Gain 2 Electrons (Some Elements in this category have more than one ionic charge)

Group 17 Gain 1 Electron

Nobel Gases do not have ionic charges.