Question

unless otherwise instructed, you may use the periodic table in the chemistry: problems and solutions book for this question. which metalloid is located in the sixth period of the periodic table? ○ at ○ sb ○ b ○ si

Explanation:

1. Recall the periodic table structure: periods are horizontal rows. Metalloids have properties between metals and non - metals.
2. Analyze each option:

• Option B (Boron): Boron is in the second period.
• Option Si (Silicon): Silicon is in the third period.
• Option Sb (Antimony): Antimony is in the fifth period.
• Option At (Astatine): Astatine is a metalloid and is located in the sixth period of the periodic table.

Answer:

A. At