Unit 3: Bonding - Concept 2: Stability and Bonding

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Multiple Choice

What ion will lithium form?

• A cation with a +1 charge

• A cation with a -1 charge

• An anion with a +1 charge

• An anion with a -1 charge

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Multiple Choice

What ion will nitrogen form?

• A cation with a +5 charge

• A cation with a +3 charge

• An anion with a -5 charge

• An anion with a -3 charge

​Because we really only care about the valence e- when using drawings to show how bonds will form, we will now learn a new and simplified diagram to show what elements will do when they form a bond.

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Draw

Draw the Lewis dot diagram for hydrogen.

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Draw

Draw the Lewis dot diagram for carbon.

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Draw

Draw the Lewis dot diagram for fluorine.

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Draw

Draw the Lewis dot diagram for phosphorous.

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​First draw the Lewis dot diagram for sodium.

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​Then draw the diagram for chlorine.

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​Next, draw an arrow showing the transfer of sodium's 1 valence electron to chlorine.

Since both atoms now have full outer shells, they are both stable with a ratio of 1:1.

​In this example, since aluminum had 3 valence electrons and each chlorine atom could only take 1, 3 chlorine atoms were needed to make all atoms stable with full outer shells.

Fill in the Blank

What is the chemical formula for the compound that will form between potassium and chlorine? Note: If a subscript is needed for the formula, simply type the number as normal. Ex: $$H_2O$$ would become H2O.

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Fill in the Blank

What is the chemical formula for the compound that will form between magnesium and fluorine? Note: If a subscript is needed for the formula, simply type the number as normal. Ex: $$H_2O$$ would become H2O.

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Fill in the Blank

What is the chemical formula for the compound that will form between aluminum and nitrogen? Note: If a subscript is needed for the formula, simply type the number as normal. Ex: $$H_2O$$ would become H2O.

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Fill in the Blank

What is the chemical formula for the compound that will form between magnesium and phosphorous? Note: If a subscript is needed for the formula, simply type the number as normal. Ex: $$H_2O$$ would become H2O.

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