Metalloids

Question 8 • GA-GSE Physical Science A

For metalloids on the periodic table, how do the group number and the period number relate?

Answer

The lower the group number, the lower the period numbers, so the metalloids are found in a diagonal moving down from left to right.

The lower the group number, the higher the period numbers, so the metalloids are found in a diagonal moving up from left to right.

The higher the group number, the lower the period numbers, so the metalloids are found in a diagonal moving down from left to right.

The higher the group number, the higher the period numbers, so the metalloids are found in a diagonal moving up from left to right.

Explanation

Metalloids generally follow the periodic table’s staircase: moving from one metalloid to the next toward the right, both the group number and the period number tend to increase. For example, boron is in group 13, period 2, while silicon is in group 14, period 3. Thus, lower group numbers are associated with lower period numbers, and the diagonal runs down from left to right.

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