Covalent Bonds | MCQs

Explanation

A covalent bond is formed when two atoms share electrons to achieve stability.

It commonly occurs between non-metal atoms, like in H₂O or CO₂.

Explanation

A covalent bond is the force of attraction that holds together two atoms that share a pair of valence electrons. The shared electrons are attracted to the nuclei of both atoms. This forms a molecule consisting of two or more atoms.

Explanation

Ionic character is determined by the difference in electronegativity between the atoms in a bond.

A larger electronegativity difference indicates a greater degree of ionic character.

CsF has the largest electronegativity difference due to the extremely high electronegativity of fluorine and the very low electronegativity of cesium. 

Explanation

Covalent crystals are hard, frequently brittle materials such as diamond, silicon, and silicon carbide.

In the simpler, monatomic types (e.g., diamond), each atom is surrounded by a number of atoms equal to its valence.