Question

Which of the following elements forms predominantly covalent compounds as compared to other elements which form ionic compounds?

• A. $Be$
• B. $Mg$
• C. $Ca$
• D. $Sr$

Answer 1

The correct option is A $Be$

Covalent character depends upon the atomic radii. Smaller the atomic radii, more the covalent character i.e. the covalent character is inversely proportional to atomic radii & among the given options $Be$ has the smallest atomic radii, hence the maximum covalent character.