Question

In group $13$, electronegativity 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)

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