Which of the following represents the correct order of electronegativity for Group 13 elements? — p Block Elements Chemistry Question

💡 Solution & Explanation

The electronegativity of Group 13 elements first decreases from B to Al, and then slightly increases down the group from Ga to Tl due to poor shielding by inner d and f electrons. The exact order is B (2.0) > Tl (1.8) > In (1.7) > Ga (1.6) > Al (1.5).