Chapter 5 Test

The person whose work led to the periodic table based on increasing atomic mass was

• Moseley
• Rutherford
• Mendeleev
• Cannizzaro

Moseley's work led to the realization that elements should be arranged by

• atomic mass
• radioactivity
• density
• atomic number

The periodic law states that the physical and chemical properties of elements are periodic functions of their

• atomic number
• atomic mass
• atomic radii
• atomic charges

Krypton is the 4th element in group 18. What is the atomic number of xenon, the 5th element?

• 54
• 68
• 72
• 90

A horizontal row of blocks in the periodic table is called a(n)

• group
• family
• period
• octet

How many elements are in a period in which only the s and p sublevels are filled?

• 2
• 8
• 18
• 32

Because the first energy level contains only the 1s sublevel, the number of elements in this period is

• 1
• 2
• 4
• 8

Elements in group 2 have the properties of

• gases
• metals
• nonmetals
• metalloids

The group of 14 f block elements in the sixth period is the

• actinides
• transition metals
• lanthanides
• metalloids

Bromine belongs to group 17. How many electrons does bromine have in the outermost energy level

• 7
• 17
• 18
• 35