Video Transcript
Which of the following pairs are
metalloids included in group 15 elements? (A) Phosphorus and bismuth, (B)
antimony and arsenic, (C) antimony and bismuth, (D) bismuth and arsenic, (E)
phosphorus and arsenic.
The elements of the periodic table
are divided into metals, nonmetals, and metalloids. To answer this question, we need to
determine which of the six metalloids are included in the group 15 elements.
A group is a collection of
chemically or electronically similar elements. Elements of the same group are
found in the same column of the periodic table. Group 15 elements, also called the
pnictogens, are found in column 15 of the periodic table. The group 15 elements include
nitrogen, phosphorus, arsenic, antimony, bismuth, and moscovium. We can see that the two group 15
elements that are metalloids are arsenic and antimony. The other four metalloid elements
that are not a part of group 15 are boron, silicon, germanium, and tellurium.
In conclusion, the pair of
metalloids included in group 15 are antimony and arsenic, answer choice (B).
