Question

In group 13, electronegativeity first decreases from B to Al and then increases marginally down the group. This is because of.

• A. Non – metallic nature of B
• B. Discrepancies in atomic size of elements.
• C. Ability of B and Al to form $p\pi - p\pi$ multiple bonds
• D. Irregular trend in electronegativity throughout the periodic table.

Answer 1

Answer: (B)

Discrepancies in atomic size of elements.

Answer 2

: There is a large size difference between B and Al.