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Which of the following best describes how the periodic table is organized?
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2. Atoms & Elements
Periodic Table: Classifications
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In which block of the periodic table is uranium (U) found?
A
f block
B
p block
C
d block
D
s block
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Recall that the periodic table is divided into blocks based on the electron subshell that is being filled with electrons: s, p, d, and f blocks.
Identify the atomic number of uranium (U), which is 92, and note its electron configuration.
Understand that uranium's electron configuration involves filling the 5f subshell, which is characteristic of the f block elements.
Recognize that elements filling the f subshell are known as the actinides and are located in the f block of the periodic table.
Conclude that uranium (U) is found in the f block of the periodic table.
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