which type of bond shows two or more atoms sharing electrons?

Covalent bonds are the type where two or more atoms share electrons to achieve stable electron configurations.

Bond Basics

Atoms share electrons in covalent bonds rather than transferring them, as in ionic bonds. This sharing creates molecules like H₂ or O₂, where valence electrons form pairs between nuclei. For instance, two hydrogen atoms share a single pair to form H-H.

Types of Covalent Bonds

• Single bonds : One shared electron pair, like in CH₄ (methane).

• Double bonds : Two pairs, such as O=O in oxygen gas.

• Triple bonds : Three pairs, seen in N≡N nitrogen.

Nonpolar versions show equal sharing (e.g., Cl₂), while polar ones are unequal (e.g., HCl).

Bond Type| Electron Sharing| Example
---|---|---
Covalent| Shared pairs| H₂O 5
Ionic| Transferred| NaCl
Hydrogen| Intermolecular attraction| H₂O molecules 1

Why Sharing Happens

Electronegativity differences under 1.7 favor covalent bonds; atoms "want" full octets. Multiple atoms network in diamond (all carbon, covalent). This contrasts ionic bonds' full transfer.

Real-World Examples

Water's polar covalent bonds explain its properties; DNA's backbone relies on covalent links. In 2026 chemistry discussions, covalent bonds trend in quantum computing talks on multi-atom sharing.

TL;DR: Covalent bonds involve electron sharing between atoms.

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