An ionic bond is formed by:
ASharing of electrons between atoms
BTransfer of electrons from one atom to another
COverlap of half-filled orbitals
DSharing of an electron pair from one atom only
Answer & Solution
Correct answer: B. Transfer of electrons from one atom to another
1. Ionic (electrovalent) bonding involves complete TRANSFER of one or more electrons.
2. Donor becomes a cation, acceptor an anion; they're held by electrostatic attraction.
3. Example: Na → Na⁺ + e⁻; Cl + e⁻ → Cl⁻; Na⁺Cl⁻ lattice.
4. (A) is covalent; (D) is coordinate (dative).
_Source: NCERT Class 11 Chem Ch 4 §4.1 Ionic Bond_
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