Question

Which group III element is expected to have physical and chemical properties that are least similar to the other elements in that family?

• A. $B$
• B. $Al$
• C. $Ga$
• D. $Tl$

Answer 1

Answer: (A)

$B$

In group III elements Boron is a metalloid while the rest other elements are non metals. Hence Boron is likely to show properties that resemble both Metals as well as Non Metals. Hence Boron is the element which is least likely to resemble the properties of other group III elements. Hence, option A is the right answer.