Final Exam Review Unit 9 & 10

Where are the valance electrons in an atom located?

• In the shell closet to the nucleus
• In the nucleus of the atom
• In the middle shells of the atom.
• In the outermost shell of the atom.

According to the octet rule, how many electrons does an atom need in its valence shell to become stable?

• 2
• 4
• 6
• 8
• 18

Which of the following is not a type of bonding in compounds?

• covalent
• electronic
• ionic
• metallic

Ionic compounds are formed when electrons are ________ between a metal and a nonmetal.

• shared
• transferred

Covalent compounds are formed when electrons are ________ between 2 more nonmetals.

• shared
• transferred

Consider the metal: Aluminum. What is its charge?

• +1
• +2
• +3
• -2
• -1

What will happen when Al forms an ionic bond?

• Lose 3 electrons
• Lose 1 electron
• Lose 2 electrons
• Gain 3 electrons
• Gain 2 electrons

Consider the nonmetal: Tellurium - Te. What is its charge?

• +1
• +2
• +3
• -2
• -1

What will happen when Te forms an ionic bond?

• Gain 2 electrons
• Lose 1 electron
• Lose 2 electrons
• Lose 3 electrons
• Gain 3 electrons

What is the formula for sodium bromide?

• NaBr
• NaBr2
• Na2Br
• NaBr3