May/June 2026 Paper 21

2026 · 40 questions · 40 parts · 40 marks

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23Group 1 Group 2 MetalsMedium1 mark
The diagram shows the melting points of some Group I elements.
bar chart of melting point in °C for lithium (about 181), sodium (about 98), rubidium (about 39) and caesium (about 28), scale 0 to 190
What is the melting point of potassium?