Chapter Three Chemistry PDF

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Chapter Three: Ionic Compounds 1. Which is NOT an ionic compound?/ a. KCl b. Ca(NO3)2 c. CBr4 d. AlBr3 2. Which is NOT a covalent bond? a. Br2 b. NO2 c. NH3 d. NaNO2 e. More than one compound 3. In bonding, main group elements_____to attain electron configuration of the noble gas closest to them in the periodic table. a. Gain electrons b. Share electrons c. Lose electrons d. Gain, lose, or share electrons 4. How many electrons are in Li+ ion? a. 1 b. 2 c. 3 d. 4 5. What is the electron configuration for F- ion? a. 1s22s22p6 6. What is the ion symbol for an atom with twenty protons and eighteen electrons? a. Ca b. Ca2+ c. Ar d. Ar2+ e. Ar27. What is the ion symbol for an atom with sixteen protons and eighteen electrons? a. S2b. S c. Ar d. Ar2+ e. Ar28. How many protons and electrons are present in Co2+? a. 27 protons, 27 electrons b. 27 protons, 25 electrons c. 27 protons, 29 electrons d. 29 protons, 27 electrons

9. What is the electron dot symbol of Mg2+? a. Mg2+ 10. What is the charge of the ions formed by group 7A elements? a. +1 b. +7 c. -1 d. -7 11. What is the charge of a sulfide ion? a. 2+ b. +1 c. 0 d. -1 e. -2 12. Which element has variable charge? a. Ar b. Au c. Al d. Ag e. More than one has variable charge 13. What pair of elements will make an ionic compound? a. Sulfur and oxygen b. Iron and chlorine c. Copper and iron d. Bromine and oxygen 14. What ionic compound is formed when potassium and bromine combine? a. PBr b. KBr c. KBr2 d. K2Br e. PBr2 15. Which is the correct name for CuCl? a. Copper chloride b. Chlorocopper c. Cooper (I) chloride d. Chlorocooper(I) e. Cooper (II) chloride 16. What is the correct name for MgF2? a. Magnesium fluoride b. Magnesium (II) fluoride c. Magnesium (I) fluoride d. Magnesium difluoride

17. What is the name of the SO3-2 ion? a. Sulfide ion b. Sulfate ion c. Sulfite ion d. Bisulfite ion 18. What is the correct chemical formula for calcium selenide? a. CaS b. CaSe c. CaSe2 d. Ca2Se 19. What is the formula for Tin (IV) Selenide? a. Ti (CN)4 b. Ti (C4)N4 c. Sn (CN) 4 d. Sn (C4N4) e. Sn (CN)2 20. What is the formula for zinc acetate? a. ZnCH3CO2 b. Zn(CH3CO2)2 c. Zn(HCO3)2 d. Zn(HCl)8 21. Which chemical formula is NOT correct? a. Na2HCO3 b. Na2HPO3 c. Na2HPO4 d. Na2SO3 e. More than one 22. Which formula is correct? a. Ag (CH3CO2)2 b. K2(CN) c. Fe(OH)2 d. Mg(HCO)3 e. More than one above is correct 23. If atoms with an electron-dot symbol of combine with atoms with an electron-dot symbol of , what is the formula of the ionic compound that is formed? a. XY b. X2Y c. XY2 d. X2Y2 e. X3Y2

24. What period 4 element forms an ion with -1 charge?

Sulfur b. Bromine c. Chlorine d. Rubidium e. Potassium 25. What is the name of the compound (NH 4)2SO4? a. Ammonium sulfide b. Ammonium sulfate c. Ammonia sulfate d. Ammonium hydrogen sulfate e. Ammonia sulfite 26. The correct name for Ag 2O is _____. a. Silver (II) oxide b. Silver (I) oxide c. Silver oxide d. Disilver oxide 27. Which compound has the highest melting point? a. KCl b. CH4 c. C6H12O6 d. H2O 28. Which formula is chromium chloride? a. CrCl b. CrCl3 c. CrCl2 d. CrCl6 e. Not enough information 29. What is the formula for the ionic compound formed from the lead(II) ion and the carbonate ion. a. LCO3 b. PbCO3 c. Pb2CO3 d. Pb2HCO3 e. PbCO4 a.

30. The correct name for AuI 3 is

a. Silver iodide b. Gold (III) iodine c. Gold iodide d. Gold (I) iodide e. Gold (III) iodide 31. What is the formula for chromous cyanide? a. CrCN b. Cr(CN)2 c. CrCN3 d. Cr2CN e. Cr3CN...