Question detail
An element in the f block has an atomic number of 58. What is its classification?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Periodicity
Question
- A. s block
- B. p block
- C. d block
- D. f block
Answer
f block
Explanation
The element with atomic number 58 is Cerium (Ce), which is located in the f block of the periodic table due to its electron configuration involving f orbitals.
Common mistake
Misclassifying Element Blocks
Students often misclassify elements as s, p, d, or f block based on incorrect assumptions about their properties rather than their position in the periodic table.
To classify elements correctly, refer to their position in the periodic table. The block classification is determined by the highest energy sublevel that is being filled. For example, elements in Group 1 and 2 are s block, Groups 13-18 are p block, Transition metals are d block, and Lanthanides and Actinides are f block.
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