Across 1. A metal used in batteries but not pencil 2. This element is found in the most odorous compound 3. Its aqueous 2+ ion has a characteristic blue color 4. Bananas are rich in its cation 5. The noble gas with the second-lowest density 6. Its hydride is the most common basic gas 7. This metal forms a yellow oxyanion in basic solution 8. A gaseous nonmetal, X, that forms a tetraoxide, XO4 9. A transition metal. M. that forms a tetraoxide mo4 10. In a flame, its compounds produce a red-violet color. 11. Its diatomic molecule has the highest bond energy of any halogen 12. Named after Professor "e=mc2 13. A semimetal that forms a common solid dioxide 14. The metal used in the preparation of Grignard reagents 15. This element, X, forms such species as XF7and X3 16. The element first identified from the Suns spectrum 17. The 3+ ion of this rare earth element has the same electron con figuration as xenon 18. Other than xenon it is the only non-radioactive noble gas which is known to form chemical 19. Napoleon may have been poisoned by this element 20.This metal forms a colorless +l aqueous ion that gives a white precipitate with aqueous chloride ion 21. Its oxide is a good diamond substitute 22. This transition metal forms compounds that have anti-cancer activity 23. The alkali metal that resembles the alkaline earth metals in its chemistry. 24. Its sulfate is used for stomach X-rays 25. One of the allotropes of this nonmetal conducts heat five times better than copper 6. The densest gaseous element 27. This transition metal forms a very hard carbide 28. Its common 4+ ion has the electron configuration [Rn]5f 29. The"weak"metal of Group 15 30. Among the alkali metals. this clement has the most soluble fluoride and the least soluble 31. The sulfide of this transition metal is an excellent lubricant 32. Emperor Napoleon III used tableware of this metal for special state occasions 282282 Across 1. A metal used in batteries but not pencils. 2. This element is found in the most odorous compounds. 3. Its aqueous 2+ ion has a characteristic blue color. 4. Bananas are rich in its cation. 5. The noble gas with the second-lowest density. 6. Its hydride is the most common basic gas. 7. This metal forms a yellow oxyanion in basic solution. 8. A gaseous nonmetal, X, that forms a tetraoxide, XO4. 9. A transition metal, M, that forms a tetraoxide, MO4. 10. In a flame, its compounds produce a red-violet color. 11. Its diatomic molecule has the highest bond energy of any halogen. 12. Named after Professor "e = mc2.'' 13. A semimetal that forms a common solid dioxide. 14. The metal used in the preparation of Grignard reagents. 15. This element, X, forms such species as XF7 and X3 − . 16. The element first identified from the Sun's spectrum. 17. The 3 + ion of this rare earth element has the same electron con figuration as xenon. 18. Other than xenon, it is the only non-radioactive noble gas which is known to form chemical compounds. 19. Napoleon may have been poisoned by this element. 20. This metal forms a colorless +1 aqueous ion that gives a white precipitate with aqueous chloride ion. 21. Its oxide is a good diamond substitute. 22. This transition metal forms compounds that have anti-cancer activity. 23. The alkali metal that resembles the alkaline earth metals in its chemistry. 24. Its sulfate is used for stomach X-rays. 25. One of the allotropes of this nonmetal conducts heat five times better than copper. 26. The densest gaseous element. 27. This transition metal forms a very hard carbide. 28. Its common 4+ ion has the electron configuration [Rn]5f 4. 29. The "weak" metal of Group 15. 30. Among the alkali metals, this clement has the most soluble fluoride and the least soluble iodide. 31. The sulfide of this transition metal is an excellent lubricant. 32. Emperor Napoleon III used tableware of this metal for special state occasions