7.1 The Covalent Bond

What is the primary reason covalent bonds form?

• To share electrons to become more stable

• To transfer electrons to become more stable

• To create ions

• To form metals.

Covalent bonds are typically formed by elements based on their ________ configurations.

• Proton number

• valence Neutron

• valence Electron

• Atomic mass

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What is a molecule?

• A single atom

• A group of covalently bonded atoms

• A type of chemical reaction

• a group of ionically bonded atoms

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Which of the following noble gases have stable electron arrangements?

• A) Helium, Neon, Argon

• B) Hydrogen, Oxygen, Nitrogen

• C) Carbon, Silicon, Germanium

• D) Fluorine, Chlorine, Bromine

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Noble gases seldom form compounds because of their ______ configurations.

• unstable

• stable

• reactive

• inert

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What is the relationship between the stability of an atom and its energy?

• Higher energy states are more stable.

• Lower energy states are more stable.

• Energy does not affect stability.

• Stability is unrelated to energy.

What do atoms form when they share their valence electrons?

• Ions

• Molecules

• Isotopes

• Neutrons

In a covalent bond, the shared electrons are considered

• as an electron for both atoms attached

• as an electron for the donating atom only

• as an electron for the receiving electron only

Which of the following is an example of a diatomic molecule that forms a covalent bond?

• Sodium (Na)

• Fluorine (F2)

• Argon (Ar)

• Helium (He)

Each fluorine atom has seven valence electrons and needs another electron to form a(n) ______.

• duet

• octet

• triplet

• quartet

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