Question

Which of the following factor(s) favour the formation of ionic bond?

• A. The electrostatic attraction between charged ions in the crystal (i.e, lattice energy) should be low.
• B. Both atoms should be equal in size.
• C. The combining elements should differ by at least 2.0 in electronegativity.
• D. The cation and anion should have inert gas electronic configuration.

Answer 1

Answer: (C), (D)

The correct options are
C The combining elements should differ by at least 2.0 in electronegativity.
D The cation and anion should have inert gas electronic configuration.

The following factors favour the formation of ionic bond.
The electrostatic attraction between charged ions in the crystal (i.e, lattice energy) should be high.
One of the atoms (metal) should be large in size. Other atom (non metal) should be small in size.
The combining elements should differ by at least 2.0 in electronegativity.
The cation and anion should have inert gas electronic configuration.