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1. Which of the following ions interferes with the action of detergents in hard water?
Na+
Ca2+
Mg2+
Ca2+ and Mg2+
Na+, Ca2+, and Mg2+

2. In period 3, as the atomic number increases, the pattern by which the properties of the element changes is:
nonmetal to metalloid to metal to noble gas
metal to metalloid to nonmetal to noble gas
nonmetal to metal to noble gas to metalloid
metal to nonmetal to noble gas to metalloid

3. The strongest reducing agent in the alkali metals is:
K
Na
Cs
Fr
Li

4. Which group contains an element that forms the basis for geological materials and an element that forms the basis for biomolecules?
Group 1A
Group 4A
Group 5A
Group 7A
Group 1A, 4A, 5A, and 7A

5. Choose the solid that forms the most covalent bonds.
Be(s)
Mg(s)
Ca(s)
Sr(s)
Ba(s)

6. Which of the following has the highest melting point?
Sr(s)
Be(s)
Mg(s)
Ca(s)
Ba(s)

7. Reacts with O2 to form compounds with the general formula M2O3
Group 1A
Group 2A
Group 3A
Group 7A
Group 8A

8. Choose the element with the highest melting point.
Li
Na
K
Rb
Cs

9. Pick the most basic oxide in aqueous solution.
BeO
CO2
BaO
SO3
Al2O3

10. Metallic sodium may be obtained from molten sodium chloride by:
electrolysis
neutralization
ionization
hydrolysis

11. In a given period this group has the element with the smallest atomic radius.
Group 1A
Group 2A
Group 3A
Group 7A
Group 8A

12. Choose the element whose ion has the largest concentration inside a human cell.
Li
Na
K
Rb
Cs

13. Choose the element with the smallest ionization energy:
Li
Na
K
Rb
Cs

14. Choose the metal that is found in the mineral dolomite.
Mg
Ca
Sr
Ba
all of these

15. Choose the compound with the lowest boiling point.
SnF4
SnCl4
SnBr4
SnI4
All are the same

16. Within a group, as the atomic numbers of the elements increase, the:
ionization energies decrease
atomic masses decrease
elements become less metallic
atomic radii decrease

17. Choose the element that is the strongest reducing agent in the gas phase.
Li
Na
K
Rb
Cs

18. In a given period this group has the element with the smallest ionization energy.
Group 1A
Group 2A
Group 3A
Group 7A
Group 8A

19. Choose the metal with the largest first ionization energy.
Na
Mg
Al
K
Ca

20. Choose the element that is the strongest reducing agent in acqueous solution.
Li
Na
K
Rb
Cs

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