Ohio Assessment for Educators (OAE) Integrated Science (024) Practice Exam

Which bond is formed by the attraction between positively charged metal ions and the surrounding electrons?

1. Hydrogen bond

2. Covalent bond

3. Metallic bond

4. Ionic bond

The correct answer is: Metallic bond

The bond formed by the attraction between positively charged metal ions and the surrounding electrons is known as a metallic bond. This type of bond arises when metal atoms release some of their electrons, creating a "sea of electrons" that are free to move throughout the metallic structure. The positively charged metal ions are held together by the electrostatic attraction between these ions and the delocalized electrons. This unique bonding arrangement gives metals their characteristic properties, such as electrical conductivity, malleability, and ductility. In contrast, a hydrogen bond involves a weak attraction between a hydrogen atom covalently bonded to an electronegative atom and another electronegative atom. A covalent bond is formed when two atoms share electrons, often resulting in a molecule. An ionic bond occurs when one atom transfers electrons to another, leading to the formation of charged ions that attract each other. Understanding the differences between these types of bonds is essential for grasping the fundamental principles of chemistry and the behavior of materials.