Lewis Dot and Chemical Bonding

How many total valence electrons are participating in bonding in the molecule above?

• 8

• 4

• 2

• 3

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following elements are an exception to the octet rule and require less than 8 valence electrons?

• H

• Li

• Be

• B

• C

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NGSS.HS-PS1-1

How many valence electrons does Hydrogen Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

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NGSS.HS-PS1-1

How many valence electrons does Nitrogen Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does Boron Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

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NGSS.HS-PS1-1

What is a valence electron?

• electron found in a middle shell

• electron found in outermost shell

• electron found in innermost shell

• electron not found in a shell

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NGSS.HS-PS1-1

Ionic bonding involves

• transfer of electrons

• sharing of electrons

• holding onto electrons

• electrons are not involved

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NGSS.HS-PS1-2

What do atoms that form positive ions tend to do?

• lose electrons

• gain electrons

• lose protons

• gain protons

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What usually forms a positive ion?

• metal

• nonmetal

• metalloid

• there is no way to tell

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Covalent compounds

• contain a sea of electrons

• share electrons

• transfer electrons

• conduct electricity

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NGSS.HS-PS1-2