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Across 4. Alkali metals do not occur ________ in nature 5. Humphry Davy discovered Potassium and what other alkali metal? 6. Lithium produces a ___ flame when ignited 7. Potassium was discovered by _______ ______ 9. Alkali metals have an _____ configuration ending in ns¹ 11. Pure alkali metals are stored in what? 13. What element did Johan Arferdson discover 14. The alkali metals are the most (reactive/unreactive) metals 15. What is Lithiums boiling point in degrees Fahrenheit? 16. ________ is the only alkali metal manufactured on a large scale (use symbol) 17. What is potassiums symbol? 18. What is Francium's elemental number? 19. When was Cesium discovered?

Down 1. What is NaOH? 2. What is the element Rb 3. Alkali metals are ____ enough to be cut with a knife. 8. ___ is used in fertilizer 10. What color flame does Cesium produce? 12. How many valence electrons does an alkali metal have? 15. Alkali metals are group __?