# Ions (Atoms with CHARGE!!!) 11 p+ 12 n 0 I’m outta here! Now what??? We have more protons than electrons. That’s weird!!!!!

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Ions (Atoms with CHARGE!!!) 11 p+ 12 n 0 I’m outta here! Now what??? We have more protons than electrons. That’s weird!!!!!

Ions (Atoms with CHARGE!!!) 9 p+ 10 n 0 We knew we do it! Now our outer shell is complete Now what??? We have more electrons than protons. That’s weird!!!!!

Ions Ion – an atom that has either lost or gained an electron(s) Ion – an atom that has either lost or gained an electron(s)

What overall charge would an ion have if it had 15 protons and 18 electrons? 1. 0 2. +3 3. -3 4. +15 5. -15 6. +18 7. -18

An atom that has lost an electron would have a _________ charge. 1. positive 2. negative 3. neutral

Atoms with Charge Atom loses electrons Atom loses electrons * Overall positive charge *Cation Atom gains electrons Atom gains electrons * Overall negative charge * Anion

Example Magnesium loses 2 e - leaving it with 12 p + and 10 e - Magnesium loses 2 e - leaving it with 12 p + and 10 e -

What charge would Magnesium have when it becomes an ion? 1. +1 2. -1 3. +2 4. -2 5. +6 6. -6

Example Magnesium loses 2 e - leaving it with 12 p + and 10 e - Magnesium loses 2 e - leaving it with 12 p + and 10 e - Overall 2+ charge and Mg becomes Mg 2+ (ion) Overall 2+ charge and Mg becomes Mg 2+ (ion)

What charge would Sulfur have as an ion? 1. +1 2. -1 3. +2 4. -2 5. +6 6. -6

Example Sulfur gains 2 e - and now has 16 p+ and 18 e - Sulfur gains 2 e - and now has 16 p+ and 18 e - Overall -2 charge and is written S 2- as an ion Overall -2 charge and is written S 2- as an ion

Charges on atoms Use the periodic table to predict charge on an atom Use the periodic table to predict charge on an atom +1 +3 +4-3-2 +2

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