Chapter 6: Chemical Bonding Summary and Definitions

Which statement best distinguishes ionic bonding from covalent bonding?

• Ionic bonds form by electron transfer; covalent by sharing

• Ionic bonds form by electron sharing; covalent by transfer

• Both bonds involve proton transfer between nuclei

• Both bonds involve neutron sharing between atoms

In an ionic bond, which particles experience the primary electrostatic attraction that holds the compound together?

• Neutral atoms with full valence shells

• Positively charged cations and negatively charged anions

• Neutrons in the nucleus and core electrons

• Atomic nuclei and shared electron pairs

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A cation is best described as which of the following?

• A neutral atom with equal protons and electrons

• An atom with no protons in the nucleus

• An ion with more electrons than protons

• An ion with fewer electrons than protons

What does a Lewis (electron dot) structure primarily show?

• Exact 3D geometry of molecules

• Energies of molecular orbitals

• All core and valence electrons

• Valence electrons involved in bonding

How many total electrons are shared in a single covalent bond between two atoms?

• One electron shared with no pairing

• Six electrons shared as three pairs

• Four electrons shared as two pairs

• Two electrons shared as one pair

Which group-to-group trend is true for ionic bonding with halogens based on common periodic patterns?

• Group 18 noble gases typically form ionic bonds with halogens

• Group 2 metals never form ionic bonds with halogens

• Group 14 elements cannot form any ionic bonds with halogens

• Group 1 metals readily form ionic bonds with halogens

Which statement about valence electrons and bond formation is most accurate?

• Protons in the nucleus create electron pairs

• Valence electrons are the most involved in bonds

• Inner shell electrons form most chemical bonds

• Neutrons determine how many bonds form

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Two atoms share electrons approximately equally. Which bond type is best described?

• Hydrogen bond between two anions

• Metallic bond with delocalized protons

• Ionic bond with full electron transfer

• Covalent bond with shared electron density

True or False: when considering how bonds form, the octet rule is not very helpful.

• True

• False

• Only for metals

• Insufficient information

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What is atomic bonding and molecule formation all about?

• Electrons arranging to lower energy

• Neutrons shifting between isotopes

• Atoms vibrating at higher temperatures

• Protons combining into new nuclei

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