Which element will most likely react in a similar way as a boron?

Answer 1

Its most likely that Boron would react in a similar way as Aluminium because both of them are in the same group (IIIA) - one above the other.But actually, Boron behaves more like Silicon.Because:

Boron is in very specific place in its period.This place is on the boundary between the metals (Li - Be) and nonmetals (C - Ne) which makes Boron a metalloid. Aluminium is in the next period, right under Boron (Their both are present in a common group).This place would give him more metal properties than Boron, so Aluminium turns out as one of the most common and widespread metals.Right next to Boron, Carbon is present.Carbon is in the nonmetal section of 2nd period, so its properties also would be different in contrast to these of Boron.But right under Carbon and right next to Aluminium, Silicon is present.Its nearer to the right side of the Periodic Table than Aluminium is, so its properties won't be namely metallic.But its also right under the typical nonmetal Carbon which would mean that its properties can't also be absolutely nonmetallic.This gives mixed properties to Silicon, making it a metalloid.Exactly like Boron.

That's why Boron reacts more like Silicon.

Answer 2

Aluminum, the element immediately under boron in its column on a wide form periodic table.