Question

Which element among those listed below, has the lowest electronegativity?

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

Answer 1

The correct option is C $Ba$

The value of electronegativity decreases down the group as the size of elements increases. Among given options, all elements belong to the same group and $Ba$ is bottom most. Hence lowest electronegativity is of $Ba$.