Question

Which of the following charectors favors the strong covalent bond :

• A. Smaller atomic size of the atoms
• B. Bigger atomic size of the atom
• C. Low ionization energy
• D. Less nuclear force of attraction on outer electrons

Answer 1

Answer: (A)

Smaller atomic size of the atoms

Atomic Size. Atomic size of the atoms forming covalent bond should be smaller. Smaller the atomic radii of atoms(More easily they will share the electrons instead of losing the electrons), more stronger the covalent bond will be. For example, $H-H$ bond is more stronger than $Cl-Cl$ bond which in tum is more stronger than Br-Br bond.
Hence option A, is correct.