Ionic Bond

What is a valence electron?

• The sum of neutrons and protons.
• The number of electrons in the outermost shell.

• A type of bond.
• A popular compound.

Is this ionic bond drawn correctly?

• Yes
• No

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Ionic bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

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How are ionic bonds formed?

• Transfer of electrons
• Sharing of electrons

The positive ions tend to _____________ electrons.

• lose

• gain

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Valence electrons are found

• in the innermost energy level of an atom

• in the middle energy levels of an atom

• in the outermost energy levels of an atom

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How many valence electrons does calcium (₂₀Ca) have?

• 2
• 4
• 6
• 7

How many valence electrons do MOST atoms need to be stable?

• 123

• 8

• as many as there are protons

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NGSS.HS-PS1-1

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Oxygen is in group 6 of the periodic table, which ion would it form?

• O^-

• O⁺

• O^2-

• O²⁺

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How many valence electrons does oxygen (₈O) have?

• 2
• 4
• 5
• 6