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Question & Answer
Chemistry
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Question & Answer
Define empirical formula. [1 mark Q&A]
Chemistry
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Inorganic Chemistry
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Question & Answer
What is electron affinity? [1 mark Q&A]
Chemistry
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Inorganic Chemistry
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Question & Answer
What is ionization energy? [1 mark Q&A]
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![Define Empirical Formula [1 Mark Q&A] – qChem+ chemistry featured image explaining the simplest whole-number ratio of atoms in a compound with molecular formula and empirical formula examples for HSC, SSC, O Level, AS Level, and A Level Chemistry students.](https://qchemplus.com/wp-content/uploads/2026/06/Define-empirical-formula-1-mark-QA-1024x564.webp "Question & Answer 1")
![What is Electron Affinity? or Define Electron Affinity. [1 Mark Q&A] – qChem+ The Home of Chemistry educational chemistry featured image showing an atom gaining an electron, electron affinity concept, and periodic table elements for HSC, SSC, O Level, AS Level, and A Level students.](https://qchemplus.com/wp-content/uploads/2026/06/What-is-electron-affinity-1-mark-QA-1024x536.webp "Question & Answer 2")
![Define Ionization Energy [1 Mark Q&A] – qChem+ The Home of Chemistry educational chemistry featured image with atomic structure, electron removal concept, and ionization energy explanation for HSC, SSC, O Level, AS Level, and A Level students.](https://qchemplus.com/wp-content/uploads/2026/06/What-is-ionization-energy-1-mark-QA-1024x536.webp "Question & Answer 3")