Valence Electrons and Octet Rule

The octet rule states that atoms are more stable when they

• have more protons than electrons

• have more electrons than protons

• have a full outer shell

• have a partial outer shell

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What type of elements tend to form anions?

• metals

• nonmetals

• metalloids

What type of atoms tend to form cations?

• metals

• nonmetals

• metalloids

Anions have a ________ charge.

• positve

• negative

• neutral

Cations have a __________ charge.

• positive

• negative

• neutral

This atom will

• lose 2 electrons

• gain 2 electrons

• lose 6 electrons

• gain 6 electrons

• do nothing

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NGSS.HS-PS1-1

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This atom will

• lose 1 electron

• gain 1 electron

• lose 7 electrons

• gain 7 electrons

• do nothing

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How many valence electrons are elements trying to reach in their outer shells?

• 1
• 2
• 5
• 8

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How do you determine the number of valence electrons an element has?

• Look at its period
• Look at its group
• Look at its atomic number
• Look at its atomic mass

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How many electrons does Calcium (Ca) need to lose to become stable?

• 1
• 2
• 3
• 4

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