Question

A student argued that electronegativity of p-block elements decrease along period and increases down the group.

1. Do you agree with this? Explain. 

2. Write about the metallic character of p-block elements.

3. Arrange the following of p-block elements in the order of decreasing oxidising power.

F₂/F-( E° =+2.85 V), Br/Br^- ( E° =+1.07 V), CI₂ /CI^- (E° =+1.36V), I₂ /I^- ( E° =+0.57V).

Answer 1

1. No. electronegativity of p-block elements increases along a period and decreases down a group.

2. Most of the p-block elements are nonmetallic in nature. Among p-block elements the metallic character decreases along a period and increases down a group.

3. F₂ > CI₂ > Br₂ > I₂ , because the standard electrode potential values decreases in the same order.