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Paper 3Theory (Core)1 marks
Understanding the electronic configurations of elements is essential in chemistry.
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Electronic Configuration of Elements
The electronic configurations of the first 20 elements are crucial for predicting their chemical behavior. For example, Sodium (Na) has an atomic number of 11 and an electronic configuration of 1s² 2s² 2p⁶ 3s¹.
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Identify the electronic configuration of Chlorine (Cl).
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