An ionic bond is formed by
Correct answer: B. the complete transfer of electrons from a metal to a non metal
- A. the sharing of a pair of electrons between two atoms
- B. the complete transfer of electrons from a metal to a non metal
- C. the overlap of two half filled orbitals
- D. the delocalisation of electrons over a lattice of cations
Explanation
Transfer produces oppositely charged ions held by electrostatic attraction, which is why ionic compounds have high melting points and conduct when molten. Sharing gives a covalent bond and delocalisation gives metallic bonding. Ionic character increases as the electronegativity difference between the two atoms widens.
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About Dipole Moment
Dipole moment measures the separation of positive and negative charge in a bond or molecule, with magnitude related to charge and distance, μ = q r. Questions distinguish polar bonds from polar molecules by considering bond direction, molecular geometry and whether individual bond moments cancel through symmetry.
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