Learning objective

Classify elements as s, p, d or f block from their position in the Periodic Table.

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Topic

Periodicity

Subtopic

Classification

AQA A Level ChemistryInorganic chemistry

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Understand this objective

Short explanation

Elements in the Periodic Table are classified into s, p, d, and f blocks based on their electron configurations. The block classification corresponds to the subshell that is being filled with electrons. For instance, elements in the s block have their outermost electrons in the s subshell, while those in the p block have their outermost electrons in the p subshell. This classification helps predict the chemical properties and reactivity of the elements, as elements within the same block exhibit similar behaviors due to their similar electron configurations.

Key concepts

s block elementsp block elements

Why it matters

This objective helps connect Classification to exam-style questions, flashcards, and revision notes for Periodicity.

Common mistakes

1 linked

Misclassifying Element Blocks: 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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