Question

The element with lowest electronegativity in 13th group is:

• A. B
• B. Al
• C. Ga
• D. In

Answer 1

Answer: (B)

Al

Down the ${13}^{th}$ group, electronegativity first decreases from B to Al and then increases marginally. This is because of the discrepancies in the atomic size of the elements.

Hence option B is the correct answer.