5 Written Questions

1. The size of an ion is expressed in terms of _______
2. Because elements in a group may have similar characteristics, another name for group is a(n) ________.
3. The size of an atom is expressed in terms of _________
4. When they have a(n) _______, ions have a stable, filled outer level
5. The _____ states that an atom with eight electrons in its outer level is unreactive.

5 Matching Questions

1. Periodic table
2. First ionization energy
3. Nonmetal
4. Periodic law
5. Period

1. a When forming compounds, a(n) _______ frequently gains electrons and can also share its outer electrons with other atoms.
2. b In the periodic table, all elements in a horizontal row are referred to as a(n) _______.
3. c The _____ shows the placement of elements with similar electron configurations in columns in order of their increasing principal quantum numbers.
4. d The ______ states that the properties of the elements are a periodic function of their atomic numbers.
5. e The energy needed to remove the most loosely held electron in an atom

5 Multiple Choice Questions

1. Johann Dobereiner called a group of three related elements a(n) _____.
   1. Triad
   2. Period
   3. Group
   4. Metal
2. The elements lanthanum through ytterbium are contained in the set of elements called the _______.
   1. Lanthanoid series
   2. Ionic radius
   3. Actinoid series
   4. Law of octaves
3. An element called a(n) ______ has both metallic and nonmetallic properties.
   1. Metal
   2. Metalloid
   3. Triad
   4. Period
4. In the periodic table, elements located in the same vertical column form a(n) ___, which is assigned a number from 1 to 18.
   1. Period
   2. Group
   3. Triad
   4. Ion
5. A(n) ____ is hard and shiny and conducts heat and electricity well.
   1. Triad
   2. Metalloid
   3. Nonmetal
   4. Metal

5 True/False Question

1. Ion → An atom that has gained or lost electrons to try to become more stable
   

   True        False

2. Transition element → In the periodic table, any element in columns 3 through 12 (IIIB-IIB) is called a(n) _______.
   

   True        False

3. Shielding effect → The _____ shows the placement of elements with similar electron configurations in columns in order of their increasing principal quantum numbers.
   

   True        False

4. Ionization energy → The energy required to remove and electron from an atom
   

   True        False

5. Law of octaves → An arrangement of the elements suggested in the mid-nineteenth century that showed the repetition of similar properties at every eight element was the ______.
   

   True        False