AS-Level Chemistry Practice Questions - AS-Level Chemistry (AQA 7404 Edexcel 8CH0 OCR H032) Exam

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Across Period 3 from Na to Ar, the first ionisation energy generally increases. Which element shows a DROP from the previous element due to electron-pair repulsion in a 3p orbital?

Sulfur (S) Magnesium (Mg) Aluminium (Al) Silicon (Si)

Correct Answer:

Sulfur (S)

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