Multiple Choice
Which group of elements on the periodic table exhibits both metallic and nonmetallic physical and chemical properties?
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2. Atoms & Elements
Periodic Table: Representative Elements & Transition Metals
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Which of the following types of elements can be found in period 3 of the periodic table?
A
Lanthanides
B
Transition metals
C
Actinides
D
Representative elements (main group elements)
Verified step by step guidance1
Understand that the periodic table is arranged in periods (rows) and groups (columns), where each period corresponds to the filling of a principal energy level of electrons.
Recall that period 3 of the periodic table includes elements with atomic numbers 11 (Sodium) through 18 (Argon), covering the third principal energy level.
Identify the types of elements in period 3: these are mainly the representative elements (also called main group elements), which include metals, metalloids, and nonmetals.
Recognize that lanthanides and actinides are found in the f-block, which corresponds to periods 6 and 7, not period 3.
Note that transition metals are located in the d-block, primarily in periods 4 through 7, so they are not present in period 3.
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