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ScotlandChemistryQuick questions

Area 1: Chemical Changes and Structure

Quick questions on Periodicity: the periodic table, groups and periods - SQA Higher Chemistry

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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State and explain the trend in covalent radius across a period. [2 marks]
What is q2?
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Why does the first ionisation energy decrease down Group 1? [2 marks]
What is q3?
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The first ionisation energy of lithium is 526 kJ mol1526 \text{ kJ mol}^{-1}. Calculate the energy to ionise 0.400 mol0.400 \text{ mol} of gaseous lithium atoms. [2 marks]

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