2.9 CW Metals, Nonmetals, Metalloids

Which three groups of the Periodic Table contain the most elements classified as metalloids (semimetals)?

• 1, 2, and 13

• 14, 15, and 16

• 2, 13, and 14

• 16, 17, and 18

The metalloids that are included in Group 15 are antimony and

• N

• P

• As

• Bi

Which element is a member of the halogen family?

• K

• B

• I

• S

Which represents the electron configuration of a metalloid?

• 2-3

• 2-5

• 2-8-5

• 2-8-6

An atom of an element contains 20 protons, 20 neutrons, and 20 electrons. This element is in Group

• 1

• 2

• 4

• 18

Which sequence of atomic numbers represents elements which have similar chemical properties?

• 19, 23, 30, 36

• 3, 12, 21, 40

• 19,16,33,50

• 4,20,38,88

Alkali metals, alkaline earth metals, and halogens are elements found respectively in Groups

• 1, 2, 18

• 1, 2, 14

• 2, 13, 17

• 1, 2, 17

On the Periodic Table, an element classified as a semimetal (metalloid) can be found in

• Period 6, Group 15

• Period 3, Group 16

• Period 2, Group 14

• Period 4, Group 15

Atoms of metallic elements (metals) tend to

• gain electrons and form negative ions

• gain electrons and form positive ions

• lose electrons and form negative ions

• lose electrons and form positive ions

Which element is considered malleable?

• gold

• hydrogen

• sulfur

• radon