Chemistry Chapter 8 Lesson 2 Questions

What is the main reason atoms share electrons in covalent bonding?

• To attain the electron configurations of noble gases

• To increase their atomic number

• To become ions

• To lose electrons.

In covalent bonding, a pair of hydrogen atoms shares electrons to form a covalent bond in a diatomic hydrogen molecule. Each hydrogen atom thus attains the electron configuration of ____.

• Neon

• Helium

• Argon

• Krypton

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is a single covalent bond?

• A bond where two atoms share one pair of electrons.

• A bond where two atoms share two pairs of electrons.

• A bond where electrons are transferred between atoms.

• A bond where atoms do not share electrons.

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NGSS.HS-PS1-2

In a hydrogen molecule, the hydrogen atoms are held together mainly by the attraction of the shared electrons to the positive nuclei. This is an example of a ________.

• ionic bond

• double covalent bond

• single covalent bond

• metallic bond

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NGSS.HS-PS1-2

What type of bond is formed when hydrogen gas consists of diatomic molecules whose atoms share only one pair of electrons?

• Ionic bond

• Double covalent bond

• Single covalent bond

• Metallic bond

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NGSS.HS-PS1-1

In a hydrogen molecule, the atoms share a ______ of electrons.

• triple pair

• double pair

• single pair

• no pair

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NGSS.MS-PS1-1

What does an electron dot structure such as H:H represent?

• The shared pair of electrons of the covalent bond by two dots.

• The arrangement of atoms in a molecule.

• The ionic bond between atoms.

• The metallic bond between atoms.

In a structural formula, the covalent bonds are represented as ______.

• dots

• dashes

• circles

• squares

Which of the following elements forms a single covalent bond in its diatomic molecule?

• Oxygen

• Fluorine

• Nitrogen

• Carbon

By sharing electrons and forming a single covalent bond, two fluorine atoms each achieve the electron configuration of ____.

• Argon

• Neon

• Helium

• Krypton

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2