Ions & Periodic Table Review

How does an atom of an element become an ion?

• The atom gains or loses only electrons
• The atom gains or loses only neutrons
• The atoms gains or loses either protons or neutrons
• The atom gains or loses only protons

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Will Sulfur gain or loss electrons to become stable?

• gain
• lose
• neither

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Will phosphorus gain or lose electrons to become stable?

• gain
• lose
• neither

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Will Potassium gain or lose electrons to become stable?

• gain
• lose
• neither

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Will boron gain or lose electrons to become stable?

• gain 
• lose
• neither

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What is symbol for the most stable form of Gallium?

• Ga⁺³
• Ga^-3
• Ga⁺⁵
• Ga^-5

What is the charge on aluminum when it forms an ion?

• -1
• +1
• +3
• -3

An element gains one electron to form a stable ion.  To which group in the periodic table does the ion's element belong?

• 15
• 16
• 17
• 18

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Which particle is negatively charged?

• proton
• atom
• neutron
• electron

Chlorine is in Group 17 of the periodic table.  Which number of electrons must be gained or lost for Chlorine to form a complete valance shell?

• 1 gained
• 1 lost
• 7 gained 
• 7 lost

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