Unit 3 Review - Physical Science - 2022-2023

What elements generally make an ionic bond ?

• Metal and nonmetal

• 2 or more nonmetals

• 2 or more metals

• 2 elements

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An ionic bond is formed when

• Valence electrons are shared.

• Valence electrons surround the cations.

• Valence electrons are transferred between atoms.

• Valence electrons are completely transferred between two metals.

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What is a valence electron?

• an electron that is found in the outermost shell of an atom

• an electron found in the innermost shell of an atom

• an electron found in the middle shell

• an electon found in the nucleus

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What is the number of valence electrons of Oxygen?

• 1

• 2

• 6

• 8

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What is the number of valence electrons of Neon?

• 6

• 7

• 8

• 9

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What type of diagram is this?

• Alkali Diagram

• Bohr Model

• Chemical Diagram

• Electron Dot Diagram

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How many valence electrons in this structure ?

• 4

• 5

• 6

• 7

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What is the number of valence electrons of Neon?

• 6

• 7

• 8

• 9

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How many electrons are being shared between the two carbon atoms in the compound ethyne?

• 1

• 2

• 3

• 6

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The three dots in the Lewis dot diagram for boron indicate that it

• Can bond with three other atoms

• Can only form triple covalent bonds

• Has five valence electrons

• scores a 3 on Pauling's electonegativity scale