Open Question
Locate aluminum in the periodic table and give its group number and period number.
4. Atoms and Elements
Periodic Table: Group Names
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Which of the following is a metalloid that is also a chalcogen?
A
B
B
Ge
C
Te
D
As
E
Cl
Verified step by step guidance1
Step 1: Understand the terms 'metalloid' and 'chalcogen'. A metalloid is an element that has properties of both metals and nonmetals. Chalcogens are elements in Group 16 of the periodic table, which include oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po).
Step 2: Identify the elements listed in the problem and determine their classifications. For example, B (boron) is a metalloid, Ge (germanium) is a metalloid, Te (tellurium) is a metalloid and a chalcogen, As (arsenic) is a metalloid, and Cl (chlorine) is a nonmetal.
Step 3: Focus on the element that satisfies both conditions: being a metalloid and belonging to the chalcogen group. From the periodic table, Te (tellurium) is the only element that meets these criteria.
Step 4: Verify the classification of Te. Te is in Group 16, confirming it is a chalcogen, and it exhibits properties of both metals and nonmetals, confirming it is a metalloid.
Step 5: Conclude that Te is the correct answer because it is the only element listed that is both a metalloid and a chalcogen.
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