Dental Admissions Test (DAT) Practice Test

Question: 1 / 400

Which type of bonding involves the sharing of electrons between atoms?

Ionic bonding

Covalent bonding

Covalent bonding involves the sharing of electrons between atoms. It is a type of chemical bonding in which pairs of electrons are shared between atoms in a molecule. Ionic bonding, on the other hand, involves the transfer of electrons from one atom to another. This results in the formation of ions, which are held together by electrostatic attraction. Metallic bonding occurs between atoms in metals, with the delocalized electrons acting as the bonding "glue". Hydrogen bonding, on the other hand, is a special type of attraction between a hydrogen atom with a partial positive charge and a highly electronegative atom with a partial negative charge, such as oxygen or nitrogen. It is a weaker form of chemical bonding compared to covalent or ionic bonding. So, option B is the correct answer as it is the only option that accurately describes a type of bonding that involves the sharing of electrons between atoms.

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Metallic bonding

Hydrogen bonding

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