Ions

Valence electrons are: 

• Electrons farthest away from the nucleus
• Electrons closest to the nucleus
• Electrons that just come and go - they don't stay with the atom

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Cations are...

• Positive

• Negative

• Neutral

Anions are...

• Positive

• Negative

• Neutral

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What is the charge of a sodium ion?

• +2

• +1

• -1

• -2

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Group 17 always has ions with a charge of 

• +1
• +2
• -1
• -2

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What charge will an Oxygen ion have? 

• +1
• -1
• +2
• -2

Which of the following has a -3 charge?

• Boron
• Fluorine
• Nitrogen
• Neon

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charge of lithium ion

• -2
• -1
• +1
• +2

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Elements on the LEFT side of the periodic table will most likely form:

• Positive ions
• Negative ions
• Neutral Ions
• None of these

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An atom becomes _______ when it loses electrons.

• Positive
• Negative
• Neutral
• Invinsible

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