Review Questions

1. Elements in a given period have the same

   1. atomic weight
   2. maximum azimuthal quantum number
   3. maximum principal quantum number
   4. valence electron structure
   5. atomic number

2. Arrange the following species in terms of increasing atomic (or ionic) radius:

   Sr, P, Mg, Mg²⁺

3. Which of the following elements has the lowest electronegativity?

   1. Cesium
   2. Strontium
   3. Calcium
   4. Barium
   5. Potassium

4. Arrange the following calcium species in terms of increasing size:

   Ca, Ca⁺, Ca²⁺, Ca³⁺, Ca^–, Ca^2–

5. The order of the elements in the periodic table is based on

   1. the number of neutrons
   2. the radius of the atom
   3. the atomic number
   4. the atomic weight
   5. the number of oxidation states

6. The elements within each column of the periodic table

   1. have similar valence electron configurations
   2. have similar atomic radii
   3. have the same principal quantum number
   4. will react to form stable elements
   5. have no similar chemical properties

7. Arrange the following elements in terms of increasing first ionization energy:

   Ga, Ba, Ru, F, N

8. Arrange the following elements in terms of decreasing electronegativity:

   Ca, Cl, Fr, P, Zn

9. Which element has the greatest electronegativity?

   1. Chlorine
   2. Oxygen
   3. Sulfur
   4. Phosphorus
   5. Fluorine

10. Which of the following elements is most electronegative?

    1. S
    2. Cl
    3. Na
    4. Mg
    5. P

11. Transition metal compounds generally exhibit bright colors because

    1. the electrons in the partially filled d orbitals are easily promoted to excited states
    2. the metals become complexed in water
    3. the metals conduct electricity, producing colored light
    4. the electrons in the d orbitals emit energy as they relax
    5. their valence electrons cause them to bind to other metals

12. Identify the following elements as metal, nonmetal, or semimetal (metalloid):

    1. Fr
    2. Pd
    3. I
    4. B
    5. Sc