The correct option is Electrovalent bond.
Explanation
Chemical bonds are the attractive forces that hold atoms together. The specific type of bond formed depends on the electronic configuration of the combining atoms and the mechanism of electron interaction (transfer or sharing).
- Electrovalent bond is correct: An Electrovalent bond, commonly referred to as an Ionic bond, is formed by the complete transfer of one or more valence electrons from one atom (usually a metal) to another (usually a non-metal). This process generates positive ions (cations) and negative ions (anions). The bond itself is the strong electrostatic force of attraction (Coulombic force) holding these oppositely charged ions together.
- Covalent bond is incorrect: A Covalent bond is formed by the mutual sharing of electron pairs between atoms to achieve stability, rather than through electrostatic attraction between ions.
- Hydrogen bond is incorrect: A Hydrogen bond is a specific type of dipole-dipole interaction. It occurs between a hydrogen atom covalently bonded to a highly electronegative atom (like N, O, or F) and another electronegative atom. It is significantly weaker than an electrovalent bond.
- Metallic bond is incorrect: A Metallic bond is the force of attraction between positive metal ions (kernels) and a pool of delocalized, mobile electrons. It does not involve distinct anions.
Key Takeaway: The term "Electrovalent bond" is synonymous with "Ionic bond," defined strictly by the electrostatic attraction between cations and anions resulting from electron transfer.