Multiple Choice
Which of the following best describes how the periodic table is useful as a tool in chemistry?
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2. Atoms & Elements
Periodic Table: Classifications
Multiple Choice
Which group of elements belongs to the f-block of the periodic table?
A
Transition metals
B
Lanthanides and actinides
C
Alkali metals
D
Halogens
Verified step by step guidance1
Understand the layout of the periodic table, which is divided into blocks based on the electron subshell being filled: s-block, p-block, d-block, and f-block.
Recall that the f-block elements are characterized by the filling of the 4f and 5f orbitals, which correspond to the lanthanide and actinide series respectively.
Identify that transition metals belong to the d-block, alkali metals to the s-block, and halogens to the p-block, so these groups do not belong to the f-block.
Recognize that the lanthanides and actinides are the two series of elements that make up the f-block, located typically below the main body of the periodic table.
Conclude that the group of elements belonging to the f-block is the lanthanides and actinides.
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