Formation of Ionic Bonds

How does oxygen become an oxide ion?

• it loses 2 electrons

• it gains 2 electrons

• it shares electrons

• it releases energy

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What part of the atom does bonding involve?

• protons

• neutrons

• all electrons

• valence electrons

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

• 2

• 8

• electrons equal to number of protons

• electrons equal to number of neutrons

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NGSS.HS-PS1-1

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In order to have a stable arrangement of 8 valence electrons, metal atoms are likely to _________electrons.

• gain electrons.

• lose electrons

• gain protons

• lose protons

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NGSS.HS-PS1-2

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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When an atom loses an electron, it becomes a

• positive ion

• negative ion

• neutral ion

• neutral atom

How are ionic bonds formed?

• Transfer of electrons
• Sharing of electrons

Why do elements bond?

• To be friends
• To create a new element
• To become stable

Cations

• Gain electrons, has an overall positive charge

• Lose electrons, has an overall positive charge

• Lose electrons, has an overall negative charge

• Gain electrons, has an overall negative charge

Anions

• Gain electrons, has an overall positive charge

• Lose electrons, has an overall positive charge

• Lose electrons, has an overall negative charge

• Gain electrons, has an overall negative charge